The world's largest invertebrate remained hidden from humanity until a tantalising glimpse 100 years ago. But it would be ...

These squid have eight arms with muscles and suckers like an octopus, plus two tentacles. The tentacles have a long stalk with no suckers, with a club at the end that does have suckers.

Vampyromorphs superficially resemble squid, but they are more closely related to octopuses, featuring eight arms instead of 10. Numerous extinct vampyromorphs have been discovered, suggesting that ...

Squids also have eight arms with suckers on the undersides and two longer tentacles, which are used to grab prey. More than ...