The algae octopus (Abdopus aculeatus), also called the prickly octopus, lives in the Indo-West Pacific. Despite its modest size — its mantle (main body) is only 3 inches long with arms stretching up ...

Two miles below the ocean surface off Monterey, California, warm water percolates from the seafloor at the base of an underwater mountain. It's a magical place, especially if you're an octopus. We now ...

This octopus can brood its eggs for nearly four years without eating. Here’s how this biological extreme has reshaped how ...

Divers descend into the cold waters of Puget Sound searching for a giant Pacific octopus. The rocky seabed is full of strange marine life, and at first the dive seems quiet. Then something moves in ...

It was the last hour of a 30-hour dive, nearly two murky miles below the ocean’s surface. A remotely operated vehicle called the Hercules was exploring the foothills of the Davidson Seamount, an ...

The heat, a new study suggests, makes for an ideal breeding ground for these eight-legged animals. By Katrina Miller In 2018, Amanda Kahn, an invertebrate biologist at San Jose State University, ...

An unlikely ally helps a coconut octopus escape sharks. Coconut octopuses are vulnerable to blacktip sharks, who use smell to find prey. With the help of an unlikely ally, this octopus is able to hide ...

Octopus mothers undertake an intense maternal journey. After laying thousands of eggs, they stop eating and dedicate ...