In particular, starfish, also called sea stars, have fivefold radial symmetry, so the animal can be divided into five identical segments. On supporting science journalism ...

Starfish are echinoderms, a form of invertebrate marine animals known for radial symmetry and having spiny skin. Researchers said most animal species have similar genetic structures, prompting ...

While scientists aren’t exactly sure how starfish developed their unique body plan, there are a few theories. One idea is that these radial displays of arms allow the animals to easy to travel ...

Nature showcases diverse nervous systems beyond a single command center. Several animals, including octopuses, leeches, and starfish, have evolved multiple brain-like organs or distributed nerve ...

Scientists couldn't find the starfish head for the longest time as they were looking in the wrong place. Turns out, the head is all over its body.

So, as odd as the starfish body plan seems, something about it was successful -- from their ancient bilateral ancestors, to the radial crinoids with their upward-facing arms, to the predatory ...

A Starfish ‘Body’ Is Just One Giant Head, Study Finds Genes associated with the torso are largely absent in a species of starfish, upending how scientists perceive these creatures ...

Scientists have finally solved the puzzle of starfish's unique bodies. As it turns out, sea stars and other echinoderms are essentially walking heads with little to no body.