#urchins — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #urchins, aggregated by home.social.
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Un petit #oursin, surtout présent dans l'océan Pacifique, a dorénavant sa propre fiche descriptive : l'oursin à anneaux blancs.
BERNARD Carole, SERVENTI Beatrice, SITTLER Alain-Pierre, DUCARME Frédéric in : #DORIS, 02/07/2026 :
Parasalenia gratiosa A. Agassiz, 1863, https://doris.ffessm.fr/ref/specie/5034#biodiversite #Echinodermes #Echinides #urchins #biodiversity #nouvellecaledonie
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💁🏻♀️ TIL: 🍝🤌 A sea urchin #pasta craze is fueling illegal nighttime #poaching in #Naples’ #Gaiola Underwater Park.
Marine biologists found that poachers strip up to 17% of the park’s purple #urchins in one night – removing a #keystonespecies that keeps algal growth in check and supports #predator #fish populations. The trade is entirely black market in #Campania, with scientists calling for a nationwide harvest moratorium.
#seaurchins #italy #marinelife #conservation #overfishing #ocean #ecosystem #marinebiology #fishing #spaghetti #seafood #biodiversity #science
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How to Revive #California’s #Underwater Forests? Smash a Spiky, Hungry Foe.
A decade ago, the coastline north of San Francisco was the site of one of the most horrific deforestations ever recorded. More than 90% of the towering, majestic #kelpforests, across 200 miles of glittering shore, were dead and gone in years. Felled by freakishly warm #ocean water.
Cove by cove, #scientists, #divers and volunteers are hauling up #urchins to protect #kelp.
https://www.nytimes.com/2025/10/21/climate/california-kelp-restoration.html
https://archive.ph/j7Qne -
CW: Hammering urchins among new strategies to help Oregon's kelp forests bounce back
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After a decade of urchins devastating kelp forests, researchers are finally fighting back — and bringing the literal hammer down.
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All totaled, divers destroyed more than 260,000 urchins.The results shocked even the scientists.
… sea star wasting disease … killed billions of sunflower sea stars worldwide, a major urchin predator.
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#Kelp #SeaStars #Urchins #PurpleUrchins
https://www.statesmanjournal.com/story/news/local/2025/11/02/new-strategies-may-help-oregons-struggling-kelp-forests-bounce-back/86818900007 -
‘The forgotten forest’: how smashing 5.6m #urchins saved a #California #kelp paradise
Pollution, warm #oceans and hungry urchins devastated #Pacific kelp. Now, thanks to divers with hammers, one of the world’s most successful rehabilitation projects has helped it rebound
Led by #BayFoundation, divers in the #SantaMonica Bay have spent 15,575 hours underwater over the past 13yr. To bring kelp back, they focus on minimizing impact of one voracious eater: the #purpleurchin.
https://www.theguardian.com/us-news/2025/aug/31/california-pacific-kelp-forest -
🎣 Overfishing urchins: A paradoxical path to marine sustainability
https://phys.org/news/2025-03-overfishing-urchins-paradoxical-path-marine.html
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I came across a local crafter making merino beanies DYED WITH PURPLE SEA URCHINS (urchins are super invasive and we need to remove them asap from areas where there’s kelp for the rest of the animals and kelp) and of course I’m going to get one
You can get it at the Sealevel SF holiday bazaar Dec 14-22 or message Seelie Studio
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Sea urchin in Lombok - Indonesia
#gili #islands #giliislands #lombok #diving #indonesia #padi #scuba #pets #coral #ocean #plongee #sealife #oceans #divecenter #marinelife #urchin #urchins -
finally listening to @KateShaw 's new episode about crinoids sea urchins.
https://strangeanimalspodcast.blubrry.net/2024/08/26/episode-395-crinoids-and-urchins/#crinoids
#fossils
#urchins
#featherStars
#seaLilies
#echinoderrms -
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See the dozens of #NewSpecies this #DeepSea robot just discovered https://www.washingtonpost.com/climate-environment/2024/02/24/new-species-deep-sea/
"Forests of ancient #corals. Clusters of undersea #urchins with cactus-like spikes, as if a desert had been inundated. Gardens of glassy #sponges, clinging to the slopes of an underwater mountain range soaring up thousands of feet from the #seafloor."
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Seascapes of the #DeepSea https://oceanbites.org/seascapes-of-the-deep-sea/
Seascape #ecology in the vicinity of a Blake Ridge cold seep: Kellie Johnson et al. https://www.frontiersin.org/articles/10.3389/fmars.2023.1198226/full
"The #ColdSeep ecosystem included #mussels, #clams, #tubeworms, and #BacterialMats capable of harnessing energy from the methane and sulfur-rich environment through symbiosis... Outside the cold seep, #SeaStars, #urchins, and #SeaCucumbers dominated. The seep also seemed to be a hotspot for certain #predators such as #octopus"
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"The researchers outlined guidelines for governments to provide long-distance larval drifters, like #urchins and #lobsters, as well as #MigratorSpecies, like #turtles and #sharks, with protected stopovers along coastal corridors. "
#MerineSanctuary
https://phys.org/news/2023-10-marine-areas-climate.html -
Scientists identify 2022 sea urchin killer https://www.usf.edu/marine-science/news/2023/scientists-identify-2022-sea-urchin-killer.aspx
A scuticociliate causes mass mortality of #Diadema antillarum in the #Caribbean Sea https://www.science.org/doi/10.1126/sciadv.adg3200 by @virome_girl
"After identifying the #ciliate using genomic techniques, the team grew it in the lab and performed infection experiments... When it was introduced to healthy #urchins in an aquarium tank, the urchins died within a few days – just as they did in the ocean. That sealed the deal for confirming the killer."
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Mystery pathogen is stripping sea #urchins of their flesh and turning them to skeletons — and it's spreading fast
A mysterious epidemic that began in the #Mediterranean at the start of the year looks set to wipe out all of the Mediterranean and #RedSea’s urchins, and possibly their #coral reefs too.
By Ben Turner, May 31, 2023
"Researchers spotted the first signs of the urchin plague in the Mediterranean Sea at the beginning of the year, when an invasive species of urchin began falling sick in waters around Greece and Turkey. From there, the disease appears to have spread southward through the Suez Canal to the Red Sea.
"Scientists are unsure of the exact disease causing the mass die-off, but they suspect it is a pathogenic ciliate parasite — a single-celled microorganism — which in 1983 eliminated the Caribbean’s entire sea urchin population. Before the parasite plague, the Caribbean was home to thriving tropical reefs, but since losing the sea urchins the reefs have been smothered by algal blooms that multiplied unchecked, blocking out sunlight and destroying around 90% of the region’s coral.
"The disease was only identified after a second wave hit the Caribbean in 2022, an event which gave scientists a second opportunity to study it.
"'The sea urchins are the reef's gardeners — they feed on the algae and prevent them from taking over and suffocating the corals that compete with them for sunlight,' Bronstein said. 'Unfortunately, these sea urchins no longer exist in the Gulf of Eilat [Aqaba] and are quickly disappearing from constantly expanding parts of the Red Sea further south.'
"The imperilment of the region’s corals is significant on both a local and global level. The Gulf of Aqaba is known for its numerous diving spots and is a popular tourist destination. And because the corals there evolved to high temperatures and salinity over millions of years, they are more resistant to climate change-driven temperature fluctuations that are killing off other coral reefs around the world."
#ClimateChange #ClimateCrisis #Extinction #Oceans
Read more: https://www.livescience.com/animals/mystery-pathogen-is-stripping-sea-urchins-of-their-flesh-and-turning-them-to-skeletons-and-its-spreading-fast -
The cause of these infections has to do with the rise in ocean temperatures (link in comments). This is happening not just in the Caribbean, but the Black Sea and Red Sea (article in comments).
#Urchins are dying off across the #caribbean Scientists now know why
A type of single-celled microorganism associated with coral diseases is to blame
By Anna Gibbs, April 19, 2023
"#Scuticociliates are found across the world’s oceans. Given their ubiquity, it’s unknown what conditions may have allowed P. apodigitiformis to become so detrimental to the urchins. It’s also unclear how it causes infection."
#ClimateChange #ClimateCrisis #Extinction #Oceans
Read more:
https://www.sciencenews.org/article/urchins-dying-off-caribbean-disease -
#Scientists have discovered that a #parasite is behind a severe die-off of long-spined #sea #urchins across the #Caribbean Sea, which has had devastating consequences for #coral #reefs and surrounding #marine #ecosystems.
#Microbiology #MarineBiology #EarthScience #sflorg
https://www.sflorg.com/2023/04/mcb04192301.html
