Pop quiz: How many arms do sea stars have? The answer seems obvious: one, two, three, four, five. Five arms. Anyone who has stumbled across one splayed on the seashore knows this. But if that is your ...

Animals that reproduce asexually by somatic cloning have special mechanisms that delay ageing provide exceptionally good health. Scientists at the University of Gothenburg have shown how ...

THE starfish in this image looks suitably electrifying, but the lightning-like currents emanating from this male Leach’s sea star are actually streams of sperm. The shot was taken in Kagoshima ...