sharks are an elasmobranch fish, a subclass of cartilaginous fish. there are eight orders, or families, of sharks that are categorized by their biology !!
shark orders within elasmobranchii:
classifications;
heterodontiformes(bullhead or horn sharks) - five gill slits, a dorsal fin with a strong spine and flat and sharp teeth in their mouth. an example of this is horn sharks.
orectolobiformes(carpetshark) - five gill slits, 2 spineless dorsal fins, an anal fin and spiracles(paired openings which take in water and ventilate the gills) near their eyes. an example of this is whale sharks.
lamniformes(mackrel sharks) - five gill slits, a large mouth with several rows of teeth, two dorsal fins, and anal fin and the ability to maintain a higher body temperature than the water around them. an example of this is great white sharks.
carcharhiniformes(ground sharks) - five gill slits, moveable eyelids which protect their eyes from injuries, two spineless dorsal fins, an anal fin and a large mouth with sharp teeth located behind their eyes. an example of this is hammerhead sharks.
squaliformes(dogfish sharks)- found in nearly every marine habitat, they have long snouts and a short mouth, five gill slits, two fins, and no anal fin. an example of this is spiny dogfish.
hexanchiformes(primitive sharks) - six or seven gill slits, one dorsal fin, an anal fin, thorny teeth and most live in deep cold water. an example of this is frilled sharks.
pristiophoriformes(sawsharks) - long snouts similar to saws, five or six gill slits, two dorsal fins, no anal fin, wide pectoral fins, transverse teeth and most of them live in tropical waters. an example of this is longnose sawsharks.
squatiniformes(angel sharks) - flattened bodies, a mouth with dermal flaps in front of a short snout, nasal barbels, eyes and a spiracle on the top of their head and no anal fin. an example of this is angel sharks.
*if any information is incorrect please tell me! i will correct it on here and on my research document :)
@tearsonthepage
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I got to learn about these little guys’ existence today and I love them so much-
I introduce to you, the Burmese Bamboo Shark
They’re smol and cute, and best of all, they’re docile towards humans- they’ve been known to like being petted or playing with diver’s hands
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Aww
They did not miss the opportunity here
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whats your favorite shark?? whats your favorite fact about that shark??
umm my favorite shark is either chain catsharks because of their bioluminescence and pattern, or whale sharks because theyre beautiful and very interesting
my favorite fun fact is probably that whale sharks on average grow to only around 13 feet, and the average adult whale shark is 30-50 feet. this is because, scientists believe, that less than 10% of whale sharks live to adulthood.
its sad but also intriguing
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