#hagfish — Public Fediverse posts on home.social

Nicole Sharp @[email protected] · 2025-10-09 · 15:00 UTC

Watch Hagfish Slime Unfurl

The eel-like hagfish has one of the best defenses in the ocean. When threatened, it releases a slime that clogs the gills of its predator but allows the hagfish itself to slough off the slime and escape. The hagfish slime’s secret weapon is long protein threads, which are initially rolled into bundles called skeins. Seen above, these skeins resemble the yarn skeins knitters and crocheters buy, but a hagfish’s skeins are only as big as the width of a human hair.

When water flows by quickly enough, the thread in a skein begins to unwind and stretch out. With enough threads unwound, the slime gets stretchy and viscous. Researchers found that it takes relatively little flow to begin this unwinding because the adhesion between threads and the surrounding fluid is higher than the thread-to-thread sticking power. (Research and image credit: M. Hossain et al., video)

#biology #fluidDynamics #hagfish #physics #rheology #science #viscoelasticity

#biology #fluiddynamics #hagfish #physics #rheology #science

Hashtag Lists @[email protected] · 2023-05-27 · 04:50 UTC

CW: Long List Showing Animal Phyla with Examples and Links

Animal Kingdom

Domain Eukaryota #Eukaryotes
Kingdom Animalia #Animals
Subdivision Bilateria BilateralSymmetry
Phyla Nephrozoa
Superphylum Deuterostomia
Phylum Chordata Chordates
Subphylum Vertebrata (Craniate)
Superclass Agnatha
Jawless Fish #Lamprey #Hagfish
Infraphylum Gnathostomata
Jawed Vertbrates
Superclass Tetrapoda
Class Chondrichthyes Cartilaginous fish #Sharks #Skates #Rays
Class Osteichthyes Bony Vertebrates
Subclass Actinoptetygii Ray-finned fish #Sturgeon Paddlefish Bowfin Gars
Subclass Sarcoptetygii Lobe-finned fish
Class Amphibia #Amphibians #Frogs
Class Sauropsida #Reptiles #Birds
Subclass Synapsida
Class Mammalia (#Mammals)
Order Monotremata (#Monotremes) #Platypus #Echidna
Subclass Theria
Infraclass Marsupialia (#Marsupials) Bandicoots #Kangaroos #Koalas #Opossums TasmanianDevils #Wallabies #Wombats
Infraclass Placentalia
Clade Atlantogenata
SuperOrder Xenarthra
Order Cingulata Armidillos
Order Pilosa #Anteaters #Sloths
SuperOrder Afrotheria
Clade Afroinsectiphilia
Order Afrosoricda GoldenMoles OtterShrews Tenrecs
Order Macroscelidea ElephantShrews
Order Tubulidentata #Aardvarks
Clade Paenungulata
Order Hydrocoidea Hydaxes
Order Proboscide #Elephants
Order Sirenia #Dugongs #Manatees
Magnorder Boreoeutheria
SuperOrder Euarchontoglires
Clade Gliriformes
Clade Glires
Order Lagomorha #Hares #Pikas #Rabbits
Order Rodentia #Beavers #Mice #Rats #Squirrels #Voles
GrandOrder Euarchonta
Order Scandentia TreeShrews
MirOrder Primatomorpha
Order Dermoptera Colugos
Order Primates #Apes #Humans #Lemurs Lorises #Monkeys
SuperOrder Laurasiatheria
Order Eulipotyphla Gymnures #Hedgehogs #Moles Shrews Solenodons
Order Chioptera #Bats
GrandOrder Ferungulata
MirOrder Ungulata
Order Artiodactyla #Antelope #Camels #Cattle #Deer #Pigs #Whales
Order Perissodactyla #Donkeys #Horses Rhinoceroses #Tapirs #Zebras
MirOrder Ferae
Order Carnivora #Bears #Cats #Dogs #Mongooses #Seals
Order Pholidota #Pangolins

Superphylum Ecdysozoa
Phylum Arthropoda
Subphylum Chelicerata
Class Arachnida #Mites #Scorpions #Spiders
Subphylum Myriapoda
Class Diplopoda #Millipedes
Class Chilopoda #Centipedes
Subphylum Hexapoda
Class Insecta (#Insects)
Subclass Apterygota Primitive wingless insects with incomplete metamorphosis
Order Archaeogantha hump-backed/jumping Bristletails
Order Zygentoma #Silverfish Firebrats Fishmoths
Subclass Palaeoptera Primitive winged insects, with their wings held upright or outstretched at rest and incomplete metamorphosis
Order Ephemeroptera #Mayflies
Order Odanata #Dragonflies #Damselflies
Subclass Polyneoptera Winged insects, with a broad, fan-like extension to their hind wings, and incomplete metamorphosis
Order Orthoptera BushCrickets #Crickets #Grasshoppers #Locusts
Order Phasmida #StickInsects
Order Plecoptera Stoneflies
Order Dermaptera #Earwigs
Order Blattodea #Cockroaches #Termites
Order Embioptera Webspinners
Order Grylloblatteria Rockcrawlers
Order Mantophasmatodea Prayingmantids Walkingsticks
Order Zoraptera AngelInsects
Subclass Paraneoptera Higher insects, with mostly incomplete metamorphosis, where a nymph generally resembles the adult
Order Hemiptera #Truebugs
SubOrder Auchenorrhyncha #Cicadas #Leafhoppers #Planthoppers #Treehoppers Spittlebugs
SubOrder Heteroptera
InfraOrder Cimicomorpha #BedBugs BatBugs AssassinBugs PirateBugs
InfraOrder Dipsocoromorpha
InfraOrder Inicocephaloidea
InfraOrder Gerromorpha WaterStriders
InfraOrder Leptopodomorpha ShoreBugs SpinyShoreBugs
InfraOrder Nepomorpha True WaterBugs
InfraOrder Peloridimorpha
InfraOrder Pentatomomorpha #StinkBugs FlatBugs SeedBugs
SubOrder Sternorhyncha #Aphids ScaleInsects Whiteflies
Order Phthiraptera sucking & biting #Lice
Order Psocoptera Booklice Barklice
Order Thysanoptera #Thrips
Subclass Endopterygota Higher insects, with a clear metamorphosis from larva via a pupa to adult, also called Holometabola
Order Coleoptera #Beetles
Order Diptera true #Flies
Order Hymenoptera #Ants #Bees #Wasps
Order Lepidoptera #Butterflies #Moths
Order Mecoptera Scorpionflies
Order Megaloptera Alderflies
Order Neuroptera Lacewings
Order Siphonaptera #Fleas
Order Raphidioptera Snakeflies
Order Strepsiptera Twistegwingflies
Order Trichoptera Caddisflies Sedgeflies