The world's largest iceberg, A23a, is drifting towards the wildlife haven of South Georgia, where it may cause problems for the resident penguins

The world's biggest iceberg is drifting toward a tiny south Atlantic island, potentially affecting the wildlife there, including seals and penguins.

This is not the first time an iceberg has posed a threat to South Georgia. In 2004, iceberg A38 "grounded on its continental shelf, leaving dead penguin chicks and seal pups on beaches as massive ice chunks blocked their access to feeding grounds,