Deep-sea creatures often look more like science fiction monsters than marine animals. The glass octopus is one such animal. The Schmidt Ocean Institute captured this footage of the incredibly rare ...

World’s Oldest Octopus: Octopuses are among the most intelligent and mysterious creatures in the ocean. Known for their ...

Her clutch was modest compared to many other octopus species—about 160 eggs, each the size of an olive, rather than the tens of thousands laid in shallower waters. But these eggs received ...

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 ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Go diving into the intertidal waters of the Great Barrier ...

Octopuses don’t always hunt alone — but their partners aren’t who you’d expect. A new study shows that some members of the species Octopus cyanea maraud around the seafloor in hunting groups with fish ...

In lieu of a penis, the male has a special mating arm called a hectocotylus. In a new study published today in Science, ...

Scientists found that the male’s hectocotylus, the specialized arm for mating, is lined with receptors that can sense ...