A seven-arm octopus was spotted in Monterey Bay in Nov. 6, 2025; the 'rarely seen' deep-sea octopus was spotted by researchers who've only seen it four times in nearly four decades.

A deep-sea octopus nursery, just the third known to exist, has been discovered off the coast of Costa Rica, according to the Schmidt Ocean Institute. Scientists were able to see an active octopus ...

The 19-day Octopus Odyssey expedition located a site of low temperature (7oC) hydrothermal venting with brooding octopus on an unnamed outcrop that was explored for the very first time on this trip.

Unprecedented numbers of the common octopus have been found in British waters this year, but what’s behind the rare ‘bloom’? View on euronews ...

Scientists have discovered at least four new species of octopus in the deep waters of a 100-square-mile area near Costa Rica, officials from the Schmidt Ocean Institute said on Tuesday. An ...

WASHINGTON (AP) — Most octopuses lead solitary lives. So scientists were startled to find thousands of octopus huddled together, protecting their eggs at the bottom of the ocean off the central ...