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 ...

Octopuses are an extremely diverse group of sea life. With roughly 300 species in total, there are many octopus species that ...

The hectocotylus is both a reproductive and sensory organ, Harvard scientists and others have found. Octopuses are some of ...

By Shanna Hanbury These eggs belong to a small octopus known in Argentinian Patagonia as pulperos. So little is known about ...

In a first-of-its-kind occurrence, about 15 red octopuses in the La Jolla aquarium’s care have transitioned from a ...

How do octopuses mate in the dark? A new study shows how the hectocotylus arm uses progesterone receptors to "taste" for a mate.

Ghost the octopus is spending her final days at the Aquarium of the Pacific caring for her eggs - even though they will never ...