BBC News SCOTLAND Robot sub finds Antarctic food stash

The expedition in the Southern Ocean found that stocks of krill under the ice were five times more concentrated than those in open waters. The shrimp-like species is a key food for penguins, whales and fish. The importance of sea ice as a nursery for krill has long been suspected. However, these findings are the first large-scale measurements of the breeding ground's existence. The discovery was made by UK scientists from the British Antarctic Survey, the Open University and the Marine Laboratory, Aberdeen.