Environmentalists fear for the island's rare king penguins and millions of elephant and fur seals if iceberg collides.

If A23a, an Antarctic iceberg the size of Rhode Island, grounds off South Georgia Island, it will create a hazard for wildlife and ships alike.

The largest iceberg in the world, known as A23a, is now drifting through the Southern Ocean. Also read. China Slams the Door on Russia’s Shadow Fleet. Could Cause Problems for W

Game of Thrones style ice wall on course to hit British island - The world’s largest iceberg, stretching from horizon to horizon, is on course to hit South Georgia Island

Iceberg A23a is on a collision course with the remote British island of South Georgia, which provides an Antarctic haven for penguins and seals.

The world’s largest iceberg is on a collision course with a remote British island, potentially putting penguins and seals at risk. The iceberg, A23a, broke free from its position north of the South Orkney Islands last month and is now heading towards South Georgia, where it could crash into the island.