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

The subjects of these mesmerising photos seem to glow with an ethereal inner luminescence that is almost out of this world. And they are indeed from an environment that is alien to us; but it is under ...

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 ...