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

It covers 3,500 km², two times the size of Greater London A23a, world’s largest iceberg 100 km 82 km Iceberg A23a South Pole Atlantic ocean South Georgia The Barron's news department was not involved in the creation of the content above.

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.