Some octopuses can leave the water for brief periods, but why is the octopus purposefully crossing the beach to squeeze into this black hole?

The animal has squirted a jet of water ... The nervous system of this common octopus, Octopus vulgaris, is far larger and more complex than that of most invertebrates. Can it think?

Blanket octopus pairs are some of the undersea world ... males and females—called sexual size dimorphism—in the animal kingdom. Why the dramatic disparity? It’s not fully known, but ...

Throughout the animal kingdom, resourcefulness often means the difference between a good meal ... Teamwork Beneath the Waves New research published in Nature Ecology & Evolution studied how the common ...

Marine scientists from the University of Auckland witnessed an extraordinary event off the coast of New Zealand. They observed a common octopus riding ...

A snorkeler was nearly strangled to death by an octopus after he poked it and disturbed the sea creature's home while on a dive off the coast of far-eastern Russia ...

While the bite from a venomous blue-lined octopus (Hapalochlaena fasciata ... This practice is especially common in animals exhibiting female sexual dimorphism, an evolutionary trait in which ...

The blue ring octopus is a small animal with a lethal secret ... While death is not common, it can take as little as 20 ...

Sexual cannibalism is common in cephalopods such as octopuses ... describing the males as a “final snack.” But while other octopus species have evolved longer mating arms that allow them ...

He looks back 600 million years, to reveal the worm-like creature which was the last common ancestor ... like to be an octopus, raising big questions about the nature of animal consciousness.