Off the rocky coast of Jervis Bay, Australia, an octopus scoops a fistful of silt into its arms, angles its siphon, and ...

Off the coast of a coral reef in the Red Sea, an octopus glides across a patch of rubble, eight arms probing every crack. A ...

Study of fossilised beaks shows patterns of wear and suggests some ancient species were up to 19 metres long ...

Octopuses, they’re just like us: New research suggests the eight-armed cephalopods are also fooled by a version of the rubber hand trick. In humans, this illusion involves covering a person’s hand so ...

These sea creatures may have been some of the fiercest predators ...

The National Institutes of Health published proposed guidelines for octopuses used in research. The NIH said a growing body of evidence suggests cephalopods are capable of feeling pain. Other ...

Octopuses appear to deliberately throw debris, sometimes directed at other octopuses, according to a new study. Octopuses appear to deliberately throw debris, sometimes directed at other octopuses, ...

Colour change in animals can occur over different timescales and aids communication and camouflage. Direct evidence of the associated energetic costs has been lacking, but now an experimental study of ...

Biologists investigated whether octopuses preferred certain arms over others when hunting, rather than using each arm equally. No matter what type of prey came by, each octopus attacked using the ...

Octopuses may have big brains because of environmental – not social – factors. Large brains in mammals are generally thought to be linked to social behaviour, an idea known as the social brain ...

Most creatures sleep, but until now, REM (rapid eye movement) sleep, the phase of sleep in which dreams occur, was thought to be exclusive to vertebrates. Octopuses appear to be the first ...