Andvord Bay - An iceberg floats on Andvord Bay on Graham Island. Increasingly, scientists are blaming the rise in ocean temperatures for the retreat of the region's glaciers.
Killer whale - Also known as orcas, killer whales are Antarctica's most fearsome predators. The region is home to over two-thirds of the global population.
The Dry Valleys - Indeed, Antarctica's Dry Valleys are the most dismal places on earth. Here, the Onyx River, a meltwater stream, meanders across a valley floor through a landscape far removed from the brilliant white ice blanket more associated with the continent.