A new fossil discovery shows that a giant ancestor of modern lobsters used spiny 'limbs' on its head to sift food from the ocean.

A mammoth effort to list all known marine life shows many species had duplicate entries in previous databases.

A volcanic eruption in Tonga in January leads to the creation of a new island in the Pacific, some 500m across and 250m high.

The Hubble telescope obtains compelling evidence that Ganymede - the largest moon in the Solar System - has an ocean beneath its icy crust.