SHARKS Sharks are any of the 340 species of fish that, together with the skates, rays, and chimeras, are sharply distinguished from the vast number of bony fish species by their cartilaginous skeletons. Sharks are very keen-sensed fishes, many species of which are able to hunt and eat nearly all the larger water animals in both shallow and deep seas. These two features account for their long evolutionary history. Many of the shark species living today …
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