There are a lot of things you take for granted when you have a head. One of those is the direction that you walk in. But what if you had no head? Surprisingly, no scientist had ever thought to ...

On an extended research visit to a friend’s lab in Tokyo, marine biologists Amy Johnson and Olaf Ellers witnessed something they’d never seen before. The starfish in Tatsuo Motokawa’s lab weren’t ...

A group of NSW high school students were snorkelling as part of a marine science class when they spotted something that sparked their curiosity. High school students have discovered a tropical sea ...

A typical starfish has five-sided symmetry. With no clear head, the starfish can move in any direction, led by any one of its five arms. If you were feeling particularly cruel, you could fold one up ...

Jaymi Heimbuch is a writer and photographer specializing in wildlife conservation, technology, and food. She is the author of "The Ethiopian Wolf: Hope at the Edge of Extinction." Starfish. Also known ...

A close-up photo of the common sunstar (Crossaster papposus), a starfish found in the North Atlantic and Pacific oceans. Photo: © Alexander Semenov Invertebrates ...