Triangle. A shark is definitely a triangle.
the goblin shark has a mouth inside a mouth.
Whale Shark
A shark
the whale shark
oval
The hammerhead shark got its name from the shape of its head, called a cephalofoil. There is no such thing as a dumb shark.
the bull shark
The Megalodon shark which is Greek for "big tooth" .
Greenland Shark
Yes
Triangular!
Very easily.