Blue Ring Octopus

Cephalopods belong to the large group of animals known as molluscs. Generally molluscs do not move well, and when they do, it is by either gliding over a slime track or by using their external shells. But not the cephalopods. Cephalopods move very quickly and with very precise movements when Read more about How can a blob of jelly, such as an octopus, move?