Good eye—this is not an octopus. It’s a giant phantom jelly (S. gigantea), with a bell that can stretch 3.3 feet across and four 33-foot arms that look like smoke billowing out from the bell.
The hectocotylus is both a reproductive and sensory organ, Harvard scientists and others have found.
Marine scientists in New Zealand have documented the world's weirdest road trip pairing.
The cephalopods team up with a variety of fish for hunting, and that results in some complex relationship dynamics that can include violence.
A recent expedition to the waters of Costa Rica has yielded new discoveries about deep sea octopuses.
