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Articles on Sharks

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Whitetip sharks amid a school of anthias near Jarvis island in the South Pacific. Kelvin Gorospe, NOAA/NMFS/Pacific Islands Fisheries Science Center Blog/Flickr

How you can help protect sharks – and what doesn’t work

Sharks are much more severely threatened by humans than vice versa. A marine biologist explains how people can help protect sharks and why some strategies are more effective than others.
A great hammerhead shark’s two eyes can be 3 feet apart on opposite sides of its skull. Ken Kiefer 2/Image Source via Getty Images

Why do hammerhead sharks have hammer-shaped heads?

The first hammerhead shark was likely the result of a genetic deformity. A biologist explains how shark DNA reveals hammerheads’ history.
Megalodon would have dwarfed today’s great white sharks. Christina Spence Morgan

Megalodon sharks ruled the oceans millions of years ago – new analyses of giant fossilized teeth are helping scientists unravel the mystery of their extinction

Megalodon, the world’s largest known shark species, swam the oceans long before humans existed. Its teeth are all that’s left, and they tell a story of an apex predator that vanished.

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