Videos of octopuses solving puzzles and escaping from jars have long fascinated people — from the safety of dry land, of course. But under the sea, octopuses’ deadly intelligence makes them one of the ...

The octopus is not the most social species on the planet. Though they are very intelligent, they also tend to be very solitary, and they have a tendency to eat each other given the chance. They’re ...

Octopuses are among the most sophisticated predators in the animal kingdom. The same cannot be said about the humble pufferfish. But a recent encounter between the two suggests the creatures may ...

One pet octopus suddenly became more than four dozen. They went viral. Then it all went south. By Emily Anthes Emily Anthes is a science reporter who writes Pet Theory, a column about our creature ...

If you thought a giant octopus clutching you with its eight arms was the stuff of nightmares, think again. A diver from Mayak Gamov, Russia, was exploring the Sea of Japan when the massive mollusk ...

Most carnivores have teeth to grasp and eat prey, so marine animals with teeth are not uncommon. Sharks, dolphins, eels, whales, many fish species, and marine mammals like seals and sea lions have ...