A233 - Sharks and Kin
There are over 470 species of sharks, and a great many of them are very
similar to one another, so the subject was expanded to provide a comprehensive
overview of all the cartilaginous fish. These animals are unique in that
their skeletons are made of cartilage rather than bone. This subject expansion
makes the poster more useful and provides far greater visual interest.
All of these fish are members of the Chondrichthyes class, which includes
the sharks, rays, skates, and chimaeras, sometimes called ghost sharks. They
are presented within their various biological groups. Of course, the great white,
hammerhead, whale shark, and other famous sharks are shown. This poster
also includes a section on the Megalodon. This long-extinct shark was one of
the largest and most powerful predators in vertebrate history. It was almost
three times the length, and four times weight, of the Great White Shark, which
terrorized audiences in Jaws.