Modern sharks are classified within the division selachii[1] and are the sister group to the batomorphi (rays and skates). Sharks are some of the most captivating and mysterious creatures that inhabit our oceans Shark, any of numerous species of cartilaginous fishes that make up the order selachii (class chondrichthyes)
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Most species have a tough skin that is dull gray in color and roughened by toothlike scales.
An annotated and illustrated catalogue of shark species known to date
Compagno, ph.d., the world’s foremost expert on sharks and director of our board of trustees. Sharks can rouse fear and awe like no other creature in the sea Find out about the world's biggest and fastest sharks, how sharks reproduce, and how some species are at risk of extinction. Although most shark species inhabit the seas, a few exceptions including the river shark and bull shark can swim both in freshwater and seawater
They commonly live at depths of about 2,000 m (7,000 ft) while some can swim even deeper. There are over 400 shark species Learn about sharks, as well as the threats this species faces, what wwf is doing to protect its future, and how you can help.
