Cushion starfish is a catch-all term for a variety of starfish species. They are distinctive for their rounded bodies and short arms. The round shape is built on a calcium-rich structure that defends ...

Starfish are known for their adorable and symmetrical arms that seem to hug everything they touch. But it turns out that they may not be hugs after all – because starfish, researchers found, are ...

Starfish are some of the strangest creatures of the animal kingdom—so much so that scientists didn’t even know for sure if the animals had heads. A new study from the Stanford University and UC ...

Imagine waking up to find your entire body gone — no torso, no limbs — just a head that has expanded, split into five distinct sections. That sounds like a horror film or a scene from science fiction.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The heads of most ...

For many creatures, having a limb caught in a predator’s mouth is usually a death sentence. Not starfish, though—they can detach the limb and leave the predator something to chew on while they crawl ...

The natural world is full of interesting creatures with unique biological systems. Among the most interesting creatures is the starfish, also referred to as a sea star. Starfish are unique in that ...

A chance discovery of a beautifully preserved fossil in the desert landscape of Morocco has solved one of the great mysteries of biology and palaeontology: how starfish evolved their arms. Starfish ...

With a large variety of starfish in the ocean, there are many unique appearances that can be surprising. One example is the cushion starfish. These marine animals are famous for their inflated bodies ...