1. Introducing sharks, skates, rays, and chimaeras -- What are sharks and how are they classified -- How many kinds of sharks are there -- How did sharks get their name -- Where do shards live -- When ...

A new pattern in shark behavior has experts sounding the alarm, and it may have everything to do with an overheating planet. Bull sharks are known to be able to swim between saltwater and freshwater, ...

Weighing up to several tons, whale sharks are also notable for their markings. Each pattern of spots is unique and scientists identify individual fish using computer programs first developed to study ...