A new study shows that octopuses act differently around territorial fish species, displaying a unique body pattern.

The octopus is built on a body plan so different from a human’s that biologists sometimes describe it as the closest thing to ...

For an octopus, almost any arm will do. New research published Thursday shows that octopuses have the ability to use any of their eight limbs to perform tasks like reaching, tiptoeing or grasping.

The coconut octopus carries its home across the seafloor in one of the strangest ways imaginable, leaving itself completely ...

Add Yahoo as a preferred source to see more of our stories on Google. a tightly cropped photo of an octopus's golden eye, with a mottled purple and golden tentacle curving around it, in a narrow ...

The octopus just revealed another one of its secrets: what determines its sex. University of Oregon researchers have identified a sex chromosome in the California two-spot octopus. This chromosome has ...

Most octopus females will mate with a male and then bite his head off—literally. But one elusive species has the sex without ...

A female octopus throws debris that hits a male attempting to mate with her. The material thrown is silt, vigor is high, and thrower’s coloration pattern is dark uniform. Credit: Godfrey-Smith et al., ...

An octopus farm proposal sparked global uproar from animal welfare advocates, scientists and ordinary people – including one 9-year-old.

The underwater cameras got it all: The octopuses emerged from a cluttered bed of empty shells, arms unfurling like ribbons. Then, suddenly, a cloud of debris came spewing out from underneath their ...