Tentacles of venom: New study reveals all octopuses are venomous

Once thought to be only the realm of the blue-ringed octopus, researchers have now shown that all octopuses and cuttlefish, and some squid are venomous. The work indicates that they all share a common, ancient venomous ancestor ...

Fish mimics octopus that mimics fish

Nature's game of intimidation and imitation comes full circle in the waters of Indonesia, where scientists have recorded for the first time an association between the black-marble jawfish (Stalix cf. histrio) and the mimic ...

Why are there no sea snakes in the Atlantic?

Sea snakes are an evolutionary success story. With about 70 species, they're the most diverse reptile group in the ocean, outnumbering sea turtle species 10-to-1.

Crown-of-thorns eat themselves out of house and home

A world-first study on the Great Barrier Reef shows crown-of-thorns starfish have the ability to find their own way home—a behavior previously undocumented—but only if their neighborhood is stocked with their favorite ...

Mystery solved: Scientists ID Caribbean sea urchin killer

Last year, sea urchins in the Caribbean started getting sick—shedding their spines, dying off and throwing reef ecosystems into chaos. Now, scientists think they've caught the killer in this marine murder mystery.

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