Articles on Sharks

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The hammerhead shark is one of the most ancient marine species on the planet, and it is very common along the Brazilian coast. Martin Prochazkacz/Shutterstock

Scientists find antidepressant in the brains of sharks off the coast of Rio de Janeiro

Scientists have identified sertraline — the active ingredient in Zoloft and dozens of other antidepressants — in the brain tissue of hammerhead sharks caught off the coast of Rio de Janeiro.
A reconstruction of bluntnose sixgill shark (or cow shark) scavenging on a tiny extinct right whale carcase during the Early Pliocene of the southern North Sea. Alexander Lovegrove

Could warming seas bring great white sharks back to the North Sea? A 5‑million‑year‑old shark tooth may provide clues

Could new populations of seals and porpoises attract the descendants of some of the large shark species that were thriving in this region 4-5 million years ago?

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