The trillion-ton slab of ice named A23a could slam into South Georgia Island and get stuck or be guided around it by currents.

The mega-iceberg poses a significant threat to South Georgia Island a remote wildlife haven. The world's largest iceberg, A23a, is drifting toward South Georgia Island, a remote and ecologically vital wildlife haven.

Credit: UK MOD Crown copyright/Cover Images A group of British scientists have photographed and filmed the world’s largest iceberg, A23a, after it began to move again after almost four decades stuck to the ocean floor.

The world's largest iceberg, A23a, is on a collision course with South Georgia Island, raising alarms for local wildlife. Penguins and seals may face starvation as the massive ice block disrupts access to their feeding grounds.