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Carcharocles megalodon was once the most fearsome predator to reign the seas. This...
These gorgeous sharks are leopard catsharks (Poroderma pantherinum) found in the...
A Toothy Grin
The southern African frilled shark (Chlamydoselachus africana) is a very rare shark...
Sizing it Up
The Smithsonian Environmental Research Center is studying the movements of sharks...
Tagging a Shark
Scientist Charles Bangley of the Smithsonian's Environmental Research Center...