Octopus mothers slam themselves against rocks and eat their own arms before their eggs hatch. Scientists have discovered what leads to the self-destruction.

An curved arrow pointing right. With their eight arms and giant egg-shaped head, octopuses are one of the most alien-looking creatures on the planet. We read Katherine Courage's book "Octopus!" ...

Octopuses have a large nervous system, with the average octopus having about 500 million neurons or brain cells. That puts it in the same “brain range” as smaller mammals such as dogs. Unlike ...

Blanket octopus pairs are some of the undersea world’s oddest couples. What’s so startling is the size difference: Males are about the size of a walnut—less than an inch long—but some ...

The dozen or so species that make up Grimpoteuthis are called Dumbo octopuses because of the two large fins—one on either side of the mantle—that protrude like ears. Add in the octopus’s ...

“Due to the involvement of the nervous and muscular systems, it is likely that cephalopod color change is one of the most ...

Go diving into the intertidal waters of the Great Barrier Reef along the northeastern coast of Australia, and you might happen upon a tiny octopus, no more than the size of your hand. Perceiving ...

Octopuses have blue blood, three hearts and a doughnut-shaped brain. But these aren’t even the most unusual things about them! Known for their otherworldly look and remarkable intelligence, octopuses ...

A hunting octopus effortless changed its colours while chasing prey. As actor Todd Kortte, 47, swam off the Belize Barrier Reef, he spotted a sneaky cephalopod swimming beneath him. Scanning the ...

Octopuses are often known for their solitary hunting habits, but recent footage from the Red Sea reveals a different story. Researchers have discovered that these intelligent sea creatures can ...