Cephalopods - Photograph by Simon Chandra, National Geographic
A newly-hatched cephalopod swims by its yet-to-be-hatched brothers and sisters. The picture was taken off Pramuka Island, Indonesia.  Researchers believe that cephalopods first appeared about 500 million years ago in the Upper Cambrian Period.

Cephalopods - Photograph by Simon Chandra, National Geographic

A newly-hatched cephalopod swims by its yet-to-be-hatched brothers and sisters. The picture was taken off Pramuka Island, Indonesia.  Researchers believe that cephalopods first appeared about 500 million years ago in the Upper Cambrian Period.