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 ...

Where exactly is the head of a starfish? Zoologists, after being stumped for centuries, may finally have an answer. “It’s as if the sea star is completely missing a trunk, and is best described as ...

Modern evolutionary biology reveals starfish, or sea stars, possess a body plan akin to a head without a trunk. Genetic and developmental studies show they lack trunk-producing signals, with ...

Starfish (aka sea stars) are master climbers. These many-armed invertebrates traverse vertical, horizontal, and even upside-down surfaces: it seems no substrate is too rocky, slimy, sandy, or glassy.