At first glance, it looks as though an octopus has chosen an unusual form of transportation. In photographs taken off Berry ...

It's a sight you don't see often, or ever: a common octopus (Octopus vulgaris) apparently hitching a ride on the back of a Risso's dolphin (Grampus griseus) by clinging onto its fin. The photo was ...

Photographer Bill Coulson captured the bizarre encounter off England — and scientists say the image is valuable evidence.

They change shape and color, and squirt ink. But they also will return your gaze, "as if they're scrutinizing you." ...

Octopuses are fascinating animals—and serve as important model organisms in neuroscience, cognition research and developmental biology. To gain a deeper understanding of their biology and evolutionary ...

Some 150,000 baby common octopuses (Octopus vulgaris) have just been released into the waters off Italy’s Adriatic coast in one of Europe’s first pilot experiments to test whether the species can help ...

Around 130,000 common octopus paralarvae, or newly hatched octopuses, have been released into waters off Italy as part of a project aimed at controlling the growing population of invasive blue crabs.