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

Some starfish made of a brittle material fortify themselves with architectural antics. Beneath a starfish’s skin lies a skeleton made of pebbly growths, called ossicles, which mostly consist of the ...

Scientists trying to work out where a starfish’s head is have come to a startling conclusion: it is effectively the whole animal. As well as solving this longstanding mystery, the finding will help us ...