#ghost-shark — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #ghost-shark, aggregated by home.social.
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And here we have a good discussion of emerging Under Sea platforms that will take some of the mission pressures off bigger and more complex crewed platforms (SSN) but not entirely replace them.
“Last year Australia commenced production of the Ghost Shark extra large autonomous underwater vehicle (XL-AUV) and deployment is now commencing. This large underwater drone currently has less range and endurance than crewed submarines but can undertake covert surveillance and mine laying missions. The RAN expects them to be capable of launching strikes against land targets by 2040 (RAN RAS-AI Strategy, p11).”
Source: https://johnmenadue.com/post/2026/06/technological-determinism-the-diminishing-future-of-aukus/
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And here we have a good discussion of emerging Under Sea platforms that will take some of the mission pressures off bigger and more complex crewed platforms (SSN) but not entirely replace them.
“Last year Australia commenced production of the Ghost Shark extra large autonomous underwater vehicle (XL-AUV) and deployment is now commencing. This large underwater drone currently has less range and endurance than crewed submarines but can undertake covert surveillance and mine laying missions. The RAN expects them to be capable of launching strikes against land targets by 2040 (RAN RAS-AI Strategy, p11).”
Source: https://johnmenadue.com/post/2026/06/technological-determinism-the-diminishing-future-of-aukus/
-
And here we have a good discussion of emerging Under Sea platforms that will take some of the mission pressures off bigger and more complex crewed platforms (SSN) but not entirely replace them.
“Last year Australia commenced production of the Ghost Shark extra large autonomous underwater vehicle (XL-AUV) and deployment is now commencing. This large underwater drone currently has less range and endurance than crewed submarines but can undertake covert surveillance and mine laying missions. The RAN expects them to be capable of launching strikes against land targets by 2040 (RAN RAS-AI Strategy, p11).”
Source: https://johnmenadue.com/post/2026/06/technological-determinism-the-diminishing-future-of-aukus/
-
And here we have a good discussion of emerging Under Sea platforms that will take some of the mission pressures off bigger and more complex crewed platforms (SSN) but not entirely replace them.
“Last year Australia commenced production of the Ghost Shark extra large autonomous underwater vehicle (XL-AUV) and deployment is now commencing. This large underwater drone currently has less range and endurance than crewed submarines but can undertake covert surveillance and mine laying missions. The RAN expects them to be capable of launching strikes against land targets by 2040 (RAN RAS-AI Strategy, p11).”
Source: https://johnmenadue.com/post/2026/06/technological-determinism-the-diminishing-future-of-aukus/
-
And here we have a good discussion of emerging Under Sea platforms that will take some of the mission pressures off bigger and more complex crewed platforms (SSN) but not entirely replace them.
“Last year Australia commenced production of the Ghost Shark extra large autonomous underwater vehicle (XL-AUV) and deployment is now commencing. This large underwater drone currently has less range and endurance than crewed submarines but can undertake covert surveillance and mine laying missions. The RAN expects them to be capable of launching strikes against land targets by 2040 (RAN RAS-AI Strategy, p11).”
Source: https://johnmenadue.com/post/2026/06/technological-determinism-the-diminishing-future-of-aukus/
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Australia banks on Ghost Bat and Ghost Shark in drone warfare shift
Australia is on a push to “maintain pace” with how rapidly drones are reshaping modern warfare. Defence Minister…
#NewsBeep #News #Australia #ADF #AU #AustralianDefenceForce #conflict #defence #Drones #ghostbat #ghostshark #war #Weapons
https://www.newsbeep.com/au/613665/ -
Australia banks on Ghost Bat and Ghost Shark in drone warfare shift
Australia is on a push to “maintain pace” with how rapidly drones are reshaping modern warfare. Defence Minister…
#NewsBeep #News #Australia #ADF #AU #AustralianDefenceForce #conflict #defence #Drones #ghostbat #ghostshark #war #Weapons
https://www.newsbeep.com/au/613665/ -
Anduril Australia shows first Ghost Shark for RAN at factory opening https://www.byteseu.com/1507751/ #AndurilAustralia #Australia #GhostShark #ran #RoyalAustralianNavy #XLAUV
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https://www.europesays.com/fr/389177/ L'Australie passe une importante commande de drones sous-marins Ghost Shark auprès d'Anduril – Zone Militaire #Actualités #Anduril #AUKUS #Australie #Collins #DroneSousMarin #FR #France #GhostShark #Indopacifique #LutteSousMarine #News #RépubliqueFrançaise #RoyalAustralianNavy #SousMarins
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Autonomous strike drones are coming to Australia’s navy https://www.byteseu.com/1366591/ #anduril #Australia #AutonomousUnderseaVehicles #GhostShark
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Plans for $1.7 billion underwater ‘Ghost Shark’ drone fleet unveiled
Australia’s navy will begin operating long-range lethal underwater drones from January next year, after the government confirmed it…
#NewsBeep #News #Australia #AU #China #defence #Drones #ghostshark #government #Labor #navy
https://www.newsbeep.com/au/132208/ -
Australia to spend $1.1 billion on stealthy, long-range underwater attack drones https://www.byteseu.com/1364942/ #Australia #AustralianDollars #AutonomousUnderwaterVehicles #GhostShark #MarkHammond #Melbourne #MilitaryCapabilities #RichardMarles
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Blog: Ghost sharks and chimaeras! Happy Halloween!
I recently learned about GHOST SHARKS!
A paper published this year (Finucci et al., 2024) announced the discovery of Harriotta avia, a new species of ghost shark native to New Zealand and Australia. I had the opportunity to speak with Dr. Dominique Didier, who helped discover them! She was super helpful, a ton of fun, and clearly very passionate and excited about what she does. She helped teach me about ghost sharks in general and spoke with me about the process of finding, documenting, and announcing a new species.
Check out the short here (transcript) and the full video here (transcript)!
#beanstem #biology #ghostShark #halloween #marine #ocean #spooky
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I recently learned about GHOST SHARKS!
A paper published this year (Finucci et al., 2024) announced the discovery of Harriotta avia, a new species of ghost shark native to New Zealand and Australia. I had the opportunity to speak with Dr. Dominique Didier, who helped discover them! She was super helpful, a ton of fun, and clearly very passionate and excited about what she does. She helped teach me about ghost sharks in general and spoke with me about the process of finding, documenting, and announcing a new species.
Check out the short here (transcript) and the full video here (transcript)!
https://beanstem.org/blog-ghost-sharks/
#beanstem #biology #ghostShark #halloween #marine #ocean #spooky
-
I recently learned about GHOST SHARKS!
A paper published this year (Finucci et al., 2024) announced the discovery of Harriotta avia, a new species of ghost shark native to New Zealand and Australia. I had the opportunity to speak with Dr. Dominique Didier, who helped discover them! She was super helpful, a ton of fun, and clearly very passionate and excited about what she does. She helped teach me about ghost sharks in general and spoke with me about the process of finding, documenting, and announcing a new species.
Check out the short here (transcript) and the full video here (transcript)!
https://beanstem.org/blog-ghost-sharks/
#beanstem #biology #ghostShark #halloween #marine #ocean #spooky
-
I recently learned about GHOST SHARKS!
A paper published this year (Finucci et al., 2024) announced the discovery of Harriotta avia, a new species of ghost shark native to New Zealand and Australia. I had the opportunity to speak with Dr. Dominique Didier, who helped discover them! She was super helpful, a ton of fun, and clearly very passionate and excited about what she does. She helped teach me about ghost sharks in general and spoke with me about the process of finding, documenting, and announcing a new species.
Check out the short here (transcript) and the full video here (transcript)!
https://beanstem.org/blog-ghost-sharks/
#beanstem #biology #ghostShark #halloween #marine #ocean #spooky
-
I recently learned about GHOST SHARKS!
A paper published this year (Finucci et al., 2024) announced the discovery of Harriotta avia, a new species of ghost shark native to New Zealand and Australia. I had the opportunity to speak with Dr. Dominique Didier, who helped discover them! She was super helpful, a ton of fun, and clearly very passionate and excited about what she does. She helped teach me about ghost sharks in general and spoke with me about the process of finding, documenting, and announcing a new species.
Check out the short here (transcript) and the full video here (transcript)!
https://beanstem.org/blog-ghost-sharks/
#beanstem #biology #ghostShark #halloween #marine #ocean #spooky
-
Watch the short here: waiting for public URL
Transcript
- Telemachus: If so then, give me chimeras!
- Okay, here ya go!
- These are Chimaeras! They just… have an extra “a” in the name
- Chimaeras are a class of fish that live deep under water. They’re related to rays and sharks, and they’re perfect to learn about for spoopy month because they’re also called SPOOKFISH and GHOST SHARKS!
- Like rays, they have a long, whip-like tail. That snake-like tail might be why they’re called “chimeras” — like the snake tail on the greek chimera
- Dr. Didier: “They’re weird looking, they have these strange snouts and sensory systems”
- That’s Dr. Dominique Didier. She’s studied ghost sharks for just over 3 decades.
- And she helped discover a new species of ghost shark THIS YEAR in New Zealand and Australia!
- Dr. Didier: “We’re coming to the conclusion that what we thought was this one, global species, Harriotta raleighana, is probably not”
- Hariotta avia, or the Australia narrow-nosed spookfish, used to be thought of as the same thing as Hariotta raleighana. Then this year, Dr. Didier and colleagues released a paper (Finucci et al., 2024) that discovered that some of the populations near Australia and New Zealand are their own, unique species!
- H avia looks very similar to H. raleighana overall. But the skin color is distinct, as is some of the morphology — that is, the shape and structure of the body and its parts.
- Genetic analysis also played a role in identifying the new species.
- Dr. Didier: Now we have a lot more evidence, partly because we can do molecular studies to say, “this is probably something new”
- This figure from the study maps some of the genetic mutations between individuals. You can clearly see that the Harriotta avia specimens are very different from the rest of the Harriotta specimens collected.
- Given the morphological and genetic data, the team was able to confidently declare the new species.
- Before I let Dr. Didier go, I had to ask one more question:
- Me: So what’s your favorite thing about these weird little guys, about ghost sharks?
- Dr. Didier: “Oh my gosh, there’s so much to love about them! I just think they’re, like, cool to look at! … They’re ancient, so looking at their anatomy can give us clues to the evolution of vertebrates… Even now, after working with them for these decades, there’s still, like, tons of stuff to be done! So that’s why I like them, I get excited about all this neat stuff”
- Me: Anything else you want to share for the end of the video?
- Dr. Didier: Coming up, on October 30th, is national ghost shark day! So break out your ghost shark juju and have a great day!
- Thank you so much to Dr. Didier for helping out, check out the link in my bio for references, and follow for more cool science!
B-roll/image credits
- Deep see chimera: NOAA/wikimedia (Public domain)
- Hydrolagus colliei: Linda Snook/MBNMS (Public domain)
- Greek chimera: Carole Raddato/flickr (CC BY-SA 2.0)
- Harriotta raleighana: NOAA Okeanos/wikimedia (Public domain)
- Spotted eagle ray: John Norton/wikimedia (CC BY 2.0)
- Hydrolagus alberti: SEFSC Pascagoula Laboratory/wikimedia (Public domain)
- Reef shark: NOAA/wikimedia (CC BY 2.0)
- Cute ghost shark illustration: Me
- Hammerhead ghost shark illustration: Zoe McGee
References
- AMNH. (2015, February 26). Type Specimens: An Overview | American Museum of Natural History. American Museum of Natural History. https://www.amnh.org/explore/news-blogs/from-the-collections-posts/just-our-types-a-short-guide-to-type-specimens
- Bottaro, M. (2022). Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa. Scientific Reports, 12(1). https://doi.org/10.1038/s41598-022-14076-2
- Didier, D., Kemper, J., & Ebert, D. (2012). Phylogeny, Biology and Classification of Extant Holocephalans. Marine Biology/CRC Marine Biology Series, 97–122. https://doi.org/10.1201/b11867-6
- Finucci, B., Cheok, J., Ebert, D. A., Herman, K., Kyne, P. M., & Dulvy, N. K. (2020). Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks. Fish and Fisheries, 22(2), 391–412. https://doi.org/10.1111/faf.12526
- Finucci, B., Didier, D., Ebert, D. A., Green, M. E., & Kemper, J. M. (2024). Harriotta avia sp. nov. – a new rhinochimaerid (Chimaeriformes: Rhinochimaeridae) described from the Southwest Pacific. Environmental Biology of Fishes. https://doi.org/10.1007/s10641-024-01577-4
- Halstead, B. W., & Bunker, N. C. (1952). The Venom Apparatus of the Ratfish, Hydrolagus colliei. Copeia, 1952(3), 128–128. https://doi.org/10.2307/1439692
https://beanstem.org/short-ghost-sharks/
#beanstem #biology #ghostShark #marine #ocean #science #shorts #spooky
-
Watch the short here: waiting for public URL
Transcript
- Telemachus: If so then, give me chimeras!
- Okay, here ya go!
- These are Chimaeras! They just… have an extra “a” in the name
- Chimaeras are a class of fish that live deep under water. They’re related to rays and sharks, and they’re perfect to learn about for spoopy month because they’re also called SPOOKFISH and GHOST SHARKS!
- Like rays, they have a long, whip-like tail. That snake-like tail might be why they’re called “chimeras” — like the snake tail on the greek chimera
- Dr. Didier: “They’re weird looking, they have these strange snouts and sensory systems”
- That’s Dr. Dominique Didier. She’s studied ghost sharks for just over 3 decades.
- And she helped discover a new species of ghost shark THIS YEAR in New Zealand and Australia!
- Dr. Didier: “We’re coming to the conclusion that what we thought was this one, global species, Harriotta raleighana, is probably not”
- Hariotta avia, or the Australia narrow-nosed spookfish, used to be thought of as the same thing as Hariotta raleighana. Then this year, Dr. Didier and colleagues released a paper (Finucci et al., 2024) that discovered that some of the populations near Australia and New Zealand are their own, unique species!
- H avia looks very similar to H. raleighana overall. But the skin color is distinct, as is some of the morphology — that is, the shape and structure of the body and its parts.
- Genetic analysis also played a role in identifying the new species.
- Dr. Didier: Now we have a lot more evidence, partly because we can do molecular studies to say, “this is probably something new”
- This figure from the study maps some of the genetic mutations between individuals. You can clearly see that the Harriotta avia specimens are very different from the rest of the Harriotta specimens collected.
- Given the morphological and genetic data, the team was able to confidently declare the new species.
- Before I let Dr. Didier go, I had to ask one more question:
- Me: So what’s your favorite thing about these weird little guys, about ghost sharks?
- Dr. Didier: “Oh my gosh, there’s so much to love about them! I just think they’re, like, cool to look at! … They’re ancient, so looking at their anatomy can give us clues to the evolution of vertebrates… Even now, after working with them for these decades, there’s still, like, tons of stuff to be done! So that’s why I like them, I get excited about all this neat stuff”
- Me: Anything else you want to share for the end of the video?
- Dr. Didier: Coming up, on October 30th, is national ghost shark day! So break out your ghost shark juju and have a great day!
- Thank you so much to Dr. Didier for helping out, check out the link in my bio for references, and follow for more cool science!
B-roll/image credits
- Deep see chimera: NOAA/wikimedia (Public domain)
- Hydrolagus colliei: Linda Snook/MBNMS (Public domain)
- Greek chimera: Carole Raddato/flickr (CC BY-SA 2.0)
- Harriotta raleighana: NOAA Okeanos/wikimedia (Public domain)
- Spotted eagle ray: John Norton/wikimedia (CC BY 2.0)
- Hydrolagus alberti: SEFSC Pascagoula Laboratory/wikimedia (Public domain)
- Reef shark: NOAA/wikimedia (CC BY 2.0)
- Cute ghost shark illustration: Me
- Hammerhead ghost shark illustration: Zoe McGee
References
- AMNH. (2015, February 26). Type Specimens: An Overview | American Museum of Natural History. American Museum of Natural History. https://www.amnh.org/explore/news-blogs/from-the-collections-posts/just-our-types-a-short-guide-to-type-specimens
- Bottaro, M. (2022). Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa. Scientific Reports, 12(1). https://doi.org/10.1038/s41598-022-14076-2
- Didier, D., Kemper, J., & Ebert, D. (2012). Phylogeny, Biology and Classification of Extant Holocephalans. Marine Biology/CRC Marine Biology Series, 97–122. https://doi.org/10.1201/b11867-6
- Finucci, B., Cheok, J., Ebert, D. A., Herman, K., Kyne, P. M., & Dulvy, N. K. (2020). Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks. Fish and Fisheries, 22(2), 391–412. https://doi.org/10.1111/faf.12526
- Finucci, B., Didier, D., Ebert, D. A., Green, M. E., & Kemper, J. M. (2024). Harriotta avia sp. nov. – a new rhinochimaerid (Chimaeriformes: Rhinochimaeridae) described from the Southwest Pacific. Environmental Biology of Fishes. https://doi.org/10.1007/s10641-024-01577-4
- Halstead, B. W., & Bunker, N. C. (1952). The Venom Apparatus of the Ratfish, Hydrolagus colliei. Copeia, 1952(3), 128–128. https://doi.org/10.2307/1439692
https://beanstem.org/short-ghost-sharks/
#beanstem #biology #ghostShark #marine #ocean #science #shorts #spooky
-
Watch the short here: waiting for public URL
Transcript
- Telemachus: If so then, give me chimeras!
- Okay, here ya go!
- These are Chimaeras! They just… have an extra “a” in the name
- Chimaeras are a class of fish that live deep under water. They’re related to rays and sharks, and they’re perfect to learn about for spoopy month because they’re also called SPOOKFISH and GHOST SHARKS!
- Like rays, they have a long, whip-like tail. That snake-like tail might be why they’re called “chimeras” — like the snake tail on the greek chimera
- Dr. Didier: “They’re weird looking, they have these strange snouts and sensory systems”
- That’s Dr. Dominique Didier. She’s studied ghost sharks for just over 3 decades.
- And she helped discover a new species of ghost shark THIS YEAR in New Zealand and Australia!
- Dr. Didier: “We’re coming to the conclusion that what we thought was this one, global species, Harriotta raleighana, is probably not”
- Hariotta avia, or the Australia narrow-nosed spookfish, used to be thought of as the same thing as Hariotta raleighana. Then this year, Dr. Didier and colleagues released a paper (Finucci et al., 2024) that discovered that some of the populations near Australia and New Zealand are their own, unique species!
- H avia looks very similar to H. raleighana overall. But the skin color is distinct, as is some of the morphology — that is, the shape and structure of the body and its parts.
- Genetic analysis also played a role in identifying the new species.
- Dr. Didier: Now we have a lot more evidence, partly because we can do molecular studies to say, “this is probably something new”
- This figure from the study maps some of the genetic mutations between individuals. You can clearly see that the Harriotta avia specimens are very different from the rest of the Harriotta specimens collected.
- Given the morphological and genetic data, the team was able to confidently declare the new species.
- Before I let Dr. Didier go, I had to ask one more question:
- Me: So what’s your favorite thing about these weird little guys, about ghost sharks?
- Dr. Didier: “Oh my gosh, there’s so much to love about them! I just think they’re, like, cool to look at! … They’re ancient, so looking at their anatomy can give us clues to the evolution of vertebrates… Even now, after working with them for these decades, there’s still, like, tons of stuff to be done! So that’s why I like them, I get excited about all this neat stuff”
- Me: Anything else you want to share for the end of the video?
- Dr. Didier: Coming up, on October 30th, is national ghost shark day! So break out your ghost shark juju and have a great day!
- Thank you so much to Dr. Didier for helping out, check out the link in my bio for references, and follow for more cool science!
B-roll/image credits
- Deep see chimera: NOAA/wikimedia (Public domain)
- Hydrolagus colliei: Linda Snook/MBNMS (Public domain)
- Greek chimera: Carole Raddato/flickr (CC BY-SA 2.0)
- Harriotta raleighana: NOAA Okeanos/wikimedia (Public domain)
- Spotted eagle ray: John Norton/wikimedia (CC BY 2.0)
- Hydrolagus alberti: SEFSC Pascagoula Laboratory/wikimedia (Public domain)
- Reef shark: NOAA/wikimedia (CC BY 2.0)
- Cute ghost shark illustration: Me
- Hammerhead ghost shark illustration: Zoe McGee
References
- AMNH. (2015, February 26). Type Specimens: An Overview | American Museum of Natural History. American Museum of Natural History. https://www.amnh.org/explore/news-blogs/from-the-collections-posts/just-our-types-a-short-guide-to-type-specimens
- Bottaro, M. (2022). Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa. Scientific Reports, 12(1). https://doi.org/10.1038/s41598-022-14076-2
- Didier, D., Kemper, J., & Ebert, D. (2012). Phylogeny, Biology and Classification of Extant Holocephalans. Marine Biology/CRC Marine Biology Series, 97–122. https://doi.org/10.1201/b11867-6
- Finucci, B., Cheok, J., Ebert, D. A., Herman, K., Kyne, P. M., & Dulvy, N. K. (2020). Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks. Fish and Fisheries, 22(2), 391–412. https://doi.org/10.1111/faf.12526
- Finucci, B., Didier, D., Ebert, D. A., Green, M. E., & Kemper, J. M. (2024). Harriotta avia sp. nov. – a new rhinochimaerid (Chimaeriformes: Rhinochimaeridae) described from the Southwest Pacific. Environmental Biology of Fishes. https://doi.org/10.1007/s10641-024-01577-4
- Halstead, B. W., & Bunker, N. C. (1952). The Venom Apparatus of the Ratfish, Hydrolagus colliei. Copeia, 1952(3), 128–128. https://doi.org/10.2307/1439692
https://beanstem.org/short-ghost-sharks/
#beanstem #biology #ghostShark #marine #ocean #science #shorts #spooky
-
Watch the short here: waiting for public URL
Transcript
- Telemachus: If so then, give me chimeras!
- Okay, here ya go!
- These are Chimaeras! They just… have an extra “a” in the name
- Chimaeras are a class of fish that live deep under water. They’re related to rays and sharks, and they’re perfect to learn about for spoopy month because they’re also called SPOOKFISH and GHOST SHARKS!
- Like rays, they have a long, whip-like tail. That snake-like tail might be why they’re called “chimeras” — like the snake tail on the greek chimera
- Dr. Didier: “They’re weird looking, they have these strange snouts and sensory systems”
- That’s Dr. Dominique Didier. She’s studied ghost sharks for just over 3 decades.
- And she helped discover a new species of ghost shark THIS YEAR in New Zealand and Australia!
- Dr. Didier: “We’re coming to the conclusion that what we thought was this one, global species, Harriotta raleighana, is probably not”
- Hariotta avia, or the Australia narrow-nosed spookfish, used to be thought of as the same thing as Hariotta raleighana. Then this year, Dr. Didier and colleagues released a paper (Finucci et al., 2024) that discovered that some of the populations near Australia and New Zealand are their own, unique species!
- H avia looks very similar to H. raleighana overall. But the skin color is distinct, as is some of the morphology — that is, the shape and structure of the body and its parts.
- Genetic analysis also played a role in identifying the new species.
- Dr. Didier: Now we have a lot more evidence, partly because we can do molecular studies to say, “this is probably something new”
- This figure from the study maps some of the genetic mutations between individuals. You can clearly see that the Harriotta avia specimens are very different from the rest of the Harriotta specimens collected.
- Given the morphological and genetic data, the team was able to confidently declare the new species.
- Before I let Dr. Didier go, I had to ask one more question:
- Me: So what’s your favorite thing about these weird little guys, about ghost sharks?
- Dr. Didier: “Oh my gosh, there’s so much to love about them! I just think they’re, like, cool to look at! … They’re ancient, so looking at their anatomy can give us clues to the evolution of vertebrates… Even now, after working with them for these decades, there’s still, like, tons of stuff to be done! So that’s why I like them, I get excited about all this neat stuff”
- Me: Anything else you want to share for the end of the video?
- Dr. Didier: Coming up, on October 30th, is national ghost shark day! So break out your ghost shark juju and have a great day!
- Thank you so much to Dr. Didier for helping out, check out the link in my bio for references, and follow for more cool science!
B-roll/image credits
- Deep see chimera: NOAA/wikimedia (Public domain)
- Hydrolagus colliei: Linda Snook/MBNMS (Public domain)
- Greek chimera: Carole Raddato/flickr (CC BY-SA 2.0)
- Harriotta raleighana: NOAA Okeanos/wikimedia (Public domain)
- Spotted eagle ray: John Norton/wikimedia (CC BY 2.0)
- Hydrolagus alberti: SEFSC Pascagoula Laboratory/wikimedia (Public domain)
- Reef shark: NOAA/wikimedia (CC BY 2.0)
- Cute ghost shark illustration: Me
- Hammerhead ghost shark illustration: Zoe McGee
References
- AMNH. (2015, February 26). Type Specimens: An Overview | American Museum of Natural History. American Museum of Natural History. https://www.amnh.org/explore/news-blogs/from-the-collections-posts/just-our-types-a-short-guide-to-type-specimens
- Bottaro, M. (2022). Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa. Scientific Reports, 12(1). https://doi.org/10.1038/s41598-022-14076-2
- Didier, D., Kemper, J., & Ebert, D. (2012). Phylogeny, Biology and Classification of Extant Holocephalans. Marine Biology/CRC Marine Biology Series, 97–122. https://doi.org/10.1201/b11867-6
- Finucci, B., Cheok, J., Ebert, D. A., Herman, K., Kyne, P. M., & Dulvy, N. K. (2020). Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks. Fish and Fisheries, 22(2), 391–412. https://doi.org/10.1111/faf.12526
- Finucci, B., Didier, D., Ebert, D. A., Green, M. E., & Kemper, J. M. (2024). Harriotta avia sp. nov. – a new rhinochimaerid (Chimaeriformes: Rhinochimaeridae) described from the Southwest Pacific. Environmental Biology of Fishes. https://doi.org/10.1007/s10641-024-01577-4
- Halstead, B. W., & Bunker, N. C. (1952). The Venom Apparatus of the Ratfish, Hydrolagus colliei. Copeia, 1952(3), 128–128. https://doi.org/10.2307/1439692
https://beanstem.org/short-ghost-sharks/
#beanstem #biology #ghostShark #marine #ocean #science #shorts #spooky
-
Watch the short here: waiting for public URL
Transcript
- Telemachus: If so then, give me chimeras!
- Okay, here ya go!
- These are Chimaeras! They just… have an extra “a” in the name
- Chimaeras are a class of fish that live deep under water. They’re related to rays and sharks, and they’re perfect to learn about for spoopy month because they’re also called SPOOKFISH and GHOST SHARKS!
- Like rays, they have a long, whip-like tail. That snake-like tail might be why they’re called “chimeras” — like the snake tail on the greek chimera
- Dr. Didier: “They’re weird looking, they have these strange snouts and sensory systems”
- That’s Dr. Dominique Didier. She’s studied ghost sharks for just over 3 decades.
- And she helped discover a new species of ghost shark THIS YEAR in New Zealand and Australia!
- Dr. Didier: “We’re coming to the conclusion that what we thought was this one, global species, Harriotta raleighana, is probably not”
- Hariotta avia, or the Australia narrow-nosed spookfish, used to be thought of as the same thing as Hariotta raleighana. Then this year, Dr. Didier and colleagues released a paper (Finucci et al., 2024) that discovered that some of the populations near Australia and New Zealand are their own, unique species!
- H avia looks very similar to H. raleighana overall. But the skin color is distinct, as is some of the morphology — that is, the shape and structure of the body and its parts.
- Genetic analysis also played a role in identifying the new species.
- Dr. Didier: Now we have a lot more evidence, partly because we can do molecular studies to say, “this is probably something new”
- This figure from the study maps some of the genetic mutations between individuals. You can clearly see that the Harriotta avia specimens are very different from the rest of the Harriotta specimens collected.
- Given the morphological and genetic data, the team was able to confidently declare the new species.
- Before I let Dr. Didier go, I had to ask one more question:
- Me: So what’s your favorite thing about these weird little guys, about ghost sharks?
- Dr. Didier: “Oh my gosh, there’s so much to love about them! I just think they’re, like, cool to look at! … They’re ancient, so looking at their anatomy can give us clues to the evolution of vertebrates… Even now, after working with them for these decades, there’s still, like, tons of stuff to be done! So that’s why I like them, I get excited about all this neat stuff”
- Me: Anything else you want to share for the end of the video?
- Dr. Didier: Coming up, on October 30th, is national ghost shark day! So break out your ghost shark juju and have a great day!
- Thank you so much to Dr. Didier for helping out, check out the link in my bio for references, and follow for more cool science!
B-roll/image credits
- Deep see chimera: NOAA/wikimedia (Public domain)
- Hydrolagus colliei: Linda Snook/MBNMS (Public domain)
- Greek chimera: Carole Raddato/flickr (CC BY-SA 2.0)
- Harriotta raleighana: NOAA Okeanos/wikimedia (Public domain)
- Spotted eagle ray: John Norton/wikimedia (CC BY 2.0)
- Hydrolagus alberti: SEFSC Pascagoula Laboratory/wikimedia (Public domain)
- Reef shark: NOAA/wikimedia (CC BY 2.0)
- Cute ghost shark illustration: Me
- Hammerhead ghost shark illustration: Zoe McGee
References
- AMNH. (2015, February 26). Type Specimens: An Overview | American Museum of Natural History. American Museum of Natural History. https://www.amnh.org/explore/news-blogs/from-the-collections-posts/just-our-types-a-short-guide-to-type-specimens
- Bottaro, M. (2022). Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa. Scientific Reports, 12(1). https://doi.org/10.1038/s41598-022-14076-2
- Didier, D., Kemper, J., & Ebert, D. (2012). Phylogeny, Biology and Classification of Extant Holocephalans. Marine Biology/CRC Marine Biology Series, 97–122. https://doi.org/10.1201/b11867-6
- Finucci, B., Cheok, J., Ebert, D. A., Herman, K., Kyne, P. M., & Dulvy, N. K. (2020). Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks. Fish and Fisheries, 22(2), 391–412. https://doi.org/10.1111/faf.12526
- Finucci, B., Didier, D., Ebert, D. A., Green, M. E., & Kemper, J. M. (2024). Harriotta avia sp. nov. – a new rhinochimaerid (Chimaeriformes: Rhinochimaeridae) described from the Southwest Pacific. Environmental Biology of Fishes. https://doi.org/10.1007/s10641-024-01577-4
- Halstead, B. W., & Bunker, N. C. (1952). The Venom Apparatus of the Ratfish, Hydrolagus colliei. Copeia, 1952(3), 128–128. https://doi.org/10.2307/1439692
https://beanstem.org/short-ghost-sharks/
#beanstem #biology #ghostShark #marine #ocean #science #shorts #spooky
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#NewSpecies of #GhostShark with unusually long nose discovered in deep seas off #NewZealand https://www.theguardian.com/world/2024/sep/25/ghost-shark-new-species-spookfish-discovered-new-zealand
Harriotta avia sp. nov. – a new rhinochimaerid described from the Southwest Pacific: Brittany Finucci et al. https://link.springer.com/article/10.1007/s10641-024-01577-4
“#Chimaeras are quite cryptic in nature – they can be hard to find in the #DeepSea… and they generally don’t get the same attention #sharks do, when it comes to research.”
-
#NewSpecies of #GhostShark with unusually long nose discovered in deep seas off #NewZealand https://www.theguardian.com/world/2024/sep/25/ghost-shark-new-species-spookfish-discovered-new-zealand
Harriotta avia sp. nov. – a new rhinochimaerid described from the Southwest Pacific: Brittany Finucci et al. https://link.springer.com/article/10.1007/s10641-024-01577-4
“#Chimaeras are quite cryptic in nature – they can be hard to find in the #DeepSea… and they generally don’t get the same attention #sharks do, when it comes to research.”
-
#NewSpecies of #GhostShark with unusually long nose discovered in deep seas off #NewZealand https://www.theguardian.com/world/2024/sep/25/ghost-shark-new-species-spookfish-discovered-new-zealand
Harriotta avia sp. nov. – a new rhinochimaerid described from the Southwest Pacific: Brittany Finucci et al. https://link.springer.com/article/10.1007/s10641-024-01577-4
“#Chimaeras are quite cryptic in nature – they can be hard to find in the #DeepSea… and they generally don’t get the same attention #sharks do, when it comes to research.”
-
#NewSpecies of #GhostShark with unusually long nose discovered in deep seas off #NewZealand https://www.theguardian.com/world/2024/sep/25/ghost-shark-new-species-spookfish-discovered-new-zealand
Harriotta avia sp. nov. – a new rhinochimaerid described from the Southwest Pacific: Brittany Finucci et al. https://link.springer.com/article/10.1007/s10641-024-01577-4
“#Chimaeras are quite cryptic in nature – they can be hard to find in the #DeepSea… and they generally don’t get the same attention #sharks do, when it comes to research.”
-
#NewSpecies of #GhostShark with unusually long nose discovered in deep seas off #NewZealand https://www.theguardian.com/world/2024/sep/25/ghost-shark-new-species-spookfish-discovered-new-zealand
Harriotta avia sp. nov. – a new rhinochimaerid described from the Southwest Pacific: Brittany Finucci et al. https://link.springer.com/article/10.1007/s10641-024-01577-4
“#Chimaeras are quite cryptic in nature – they can be hard to find in the #DeepSea… and they generally don’t get the same attention #sharks do, when it comes to research.”
-
Dr Albert Palazzo, UNSW Canberra, argues in the Lowy Institute's The Interpreter that #AUKUS is a return to the failed 1920s "Singapore Strategy". In the 2020s submarines are in the role of battleships & drones in place of torpedo aircraft. https://www.lowyinstitute.org/the-interpreter/aukus-singapore-strategy-redux
However, I suggest an alternative is developing, where Australia builds a fleet of locally made large uncrewed #XLUUV #GhostShark submarines, in place of #SSN nuclear crewed ones. https://blog.highereducationwhisperer.com/2024/08/aukus-beyond-submarines.html#drone
-
Dr Albert Palazzo, UNSW Canberra, argues in the Lowy Institute's The Interpreter that #AUKUS is a return to the failed 1920s "Singapore Strategy". In the 2020s submarines are in the role of battleships & drones in place of torpedo aircraft. https://www.lowyinstitute.org/the-interpreter/aukus-singapore-strategy-redux
However, I suggest an alternative is developing, where Australia builds a fleet of locally made large uncrewed #XLUUV #GhostShark submarines, in place of #SSN nuclear crewed ones. https://blog.highereducationwhisperer.com/2024/08/aukus-beyond-submarines.html#drone
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#GhostShark (2013) 🦈
When rednecks on a fishing trip kill a great white shark, its spirit comes back for revenge, and soon turns its sights on the town of Smallport.
#CreatureFeature #FilmsWithBite
#FilmMastodon 📽️ 🎬 -
#GhostShark (2013) 🦈
When rednecks on a fishing trip kill a great white shark, its spirit comes back for revenge, and soon turns its sights on the town of Smallport.
#CreatureFeature #FilmsWithBite
#FilmMastodon 📽️ 🎬 -
#GhostShark (2013) 🦈
When rednecks on a fishing trip kill a great white shark, its spirit comes back for revenge, and soon turns its sights on the town of Smallport.
#CreatureFeature #FilmsWithBite
#FilmMastodon 📽️ 🎬 -
#GhostShark (2013) 🦈
When rednecks on a fishing trip kill a great white shark, its spirit comes back for revenge, and soon turns its sights on the town of Smallport.
#CreatureFeature #FilmsWithBite
#FilmMastodon 📽️ 🎬 -
#GhostShark (2013) 🦈
When rednecks on a fishing trip kill a great white shark, its spirit comes back for revenge, and soon turns its sights on the town of Smallport.
#CreatureFeature #FilmsWithBite
#FilmMastodon 📽️ 🎬 -
#Australia’s #GhostShark Uncrewed #Submarine Breaks Cover
Ghost Shark is Australia’s ambitious extra-large autonomous undersea vehicle (#XLAUV), but details about its future missions with the Royal Australian Navy (RAN) remain scarce.
It’s appearance has a lot in common with another extra-large #AUV, #Boeing’s #Orca, first of which was delivered to #US #Navy for trials in Dec. But direct comparison between them is not possible as we have no specifications for Ghost Shark.
https://www.twz.com/sea/australias-ghost-shark-large-uncrewed-submarine-breaks-cover -
#Australia’s #GhostShark Uncrewed #Submarine Breaks Cover
Ghost Shark is Australia’s ambitious extra-large autonomous undersea vehicle (#XLAUV), but details about its future missions with the Royal Australian Navy (RAN) remain scarce.
It’s appearance has a lot in common with another extra-large #AUV, #Boeing’s #Orca, first of which was delivered to #US #Navy for trials in Dec. But direct comparison between them is not possible as we have no specifications for Ghost Shark.
https://www.twz.com/sea/australias-ghost-shark-large-uncrewed-submarine-breaks-cover -
#Australia’s #GhostShark Uncrewed #Submarine Breaks Cover
Ghost Shark is Australia’s ambitious extra-large autonomous undersea vehicle (#XLAUV), but details about its future missions with the Royal Australian Navy (RAN) remain scarce.
It’s appearance has a lot in common with another extra-large #AUV, #Boeing’s #Orca, first of which was delivered to #US #Navy for trials in Dec. But direct comparison between them is not possible as we have no specifications for Ghost Shark.
https://www.twz.com/sea/australias-ghost-shark-large-uncrewed-submarine-breaks-cover -
#Australia’s #GhostShark Uncrewed #Submarine Breaks Cover
Ghost Shark is Australia’s ambitious extra-large autonomous undersea vehicle (#XLAUV), but details about its future missions with the Royal Australian Navy (RAN) remain scarce.
It’s appearance has a lot in common with another extra-large #AUV, #Boeing’s #Orca, first of which was delivered to #US #Navy for trials in Dec. But direct comparison between them is not possible as we have no specifications for Ghost Shark.
https://www.twz.com/sea/australias-ghost-shark-large-uncrewed-submarine-breaks-cover -
#Australia’s #GhostShark Uncrewed #Submarine Breaks Cover
Ghost Shark is Australia’s ambitious extra-large autonomous undersea vehicle (#XLAUV), but details about its future missions with the Royal Australian Navy (RAN) remain scarce.
It’s appearance has a lot in common with another extra-large #AUV, #Boeing’s #Orca, first of which was delivered to #US #Navy for trials in Dec. But direct comparison between them is not possible as we have no specifications for Ghost Shark.
https://www.twz.com/sea/australias-ghost-shark-large-uncrewed-submarine-breaks-cover -
#CrittersOfMastodon
#GhostShark#Chimaeras (ghost sharks) are soft-bodied, shark-like fish with bulky heads and long, tapered tails; measured from the tail, they can grow up to 150 cm (4.9 ft) in length.
Ghost sharks are not actual sharks, but a species of fish closely related to sharks and rays.
They 're cartilaginous, meaning their skeletons are primarily composed of cartilage, which gives them an eerie, ethereal quality.
They're known for their winged fins, protruding forehead and "dead eye gaze".The ghost shark's retractable sex organ resembles a spiky club that sits at the end of a stalk.
The first dorsal fin, which is the fin present on its back, is uniquely shorter than its curved spine.
Most species of ghost shark inhabit the deep sea, although a handful of species prefer to live in shallow coastal waters.
They're thought to originate around 420 million years ago/This video is thought to be the first time one has been caught on camera.
-
#CrittersOfMastodon
#GhostShark#Chimaeras (ghost sharks) are soft-bodied, shark-like fish with bulky heads and long, tapered tails; measured from the tail, they can grow up to 150 cm (4.9 ft) in length.
Ghost sharks are not actual sharks, but a species of fish closely related to sharks and rays.
They 're cartilaginous, meaning their skeletons are primarily composed of cartilage, which gives them an eerie, ethereal quality.
They're known for their winged fins, protruding forehead and "dead eye gaze".The ghost shark's retractable sex organ resembles a spiky club that sits at the end of a stalk.
The first dorsal fin, which is the fin present on its back, is uniquely shorter than its curved spine.
Most species of ghost shark inhabit the deep sea, although a handful of species prefer to live in shallow coastal waters.
They're thought to originate around 420 million years ago/This video is thought to be the first time one has been caught on camera.
-
#CrittersOfMastodon
#GhostShark#Chimaeras (ghost sharks) are soft-bodied, shark-like fish with bulky heads and long, tapered tails; measured from the tail, they can grow up to 150 cm (4.9 ft) in length.
Ghost sharks are not actual sharks, but a species of fish closely related to sharks and rays.
They 're cartilaginous, meaning their skeletons are primarily composed of cartilage, which gives them an eerie, ethereal quality.
They're known for their winged fins, protruding forehead and "dead eye gaze".The ghost shark's retractable sex organ resembles a spiky club that sits at the end of a stalk.
The first dorsal fin, which is the fin present on its back, is uniquely shorter than its curved spine.
Most species of ghost shark inhabit the deep sea, although a handful of species prefer to live in shallow coastal waters.
They're thought to originate around 420 million years ago/This video is thought to be the first time one has been caught on camera.
