Scientists think the sea creatures have evolved over time to shed their bodies to eventually become only heads! Find out more here.
Scientists Finally Found Starfish's Head — It's All Over the Place
Starfish 'arms' are actually extensions of their head, scientists say, Marine life
Starfish 'arms' are actually extensions of their head, scientists say, Marine life
Star Fish May Be All Head No Body
Scientists finally work out where a starfish's head is - BBC Science Focus Magazine
Starfish Are Basically Walking Heads, and Literally Nothing Else
Starfish Are Heads--Just Heads
No, a starfish does not have five arms. They're all heads
Starfish arms are their heads, new study suggests - BBC Newsround
Starfish don't have arms, they are 'heads that can crawl
Starfish 'arms' are actually extensions of their head, scientists say, Marine life
Scientists Finally Found Starfish's Head — It's All Over the Place
Deep-sea creatures: Brittle sea star and other unusual fishy finds - BBC Newsround