Learn about the deep sea squid that was found buried in mud, sticking its tentacles out to blend in with the environment.

Most people have never heard of the rare, seven-armed creature MBARI recently filmed in the deep sea. Watch footage of it ...

Almost a half-mile below Monterey Bay's surface, California scientists recorded rare footage of a seven-arm octopus eating a ...

Scientists on California’s Central Coast recently spotted a giant, evasive seven-arm octopus while on a research expedition ...

A newly discovered predatory “death-ball” sponge in the Southern Ocean hunts small prey with tiny hooks, revealing surprising ...

Arms of the rarely seen species were discovered at an Aberdeenshire national nature reserve.

Meet the “ghost fish,” a phantom of the abyss. Here’s how we found the first ever proof of its existence just a few years ago. The deep sea is a part of the world that very few humans get the chance ...

Cephalopods—the class of animals that comprises octopuses and squids—are ubiquitous throughout the ocean, including in the ...

A group of “rarely seen” Gervais’ beaked whales was recently spotted near Madeira, a Portuguese archipelago, photos show. Screengrab from the Magic Dolphin ecotour agency A mysterious group of ...