The world's largest iceberg appears to have run aground off the coast of a remote British island home to millions of penguins and seals — potentially threatening local wildlife, but also providing an opportunity for research into such rare "megabergs.

The A23a iceberg is twice the size of Greater London, and slightly smaller than the State of Rhode Island The world’s largest iceberg has run aground off the coast of a remote island in the Atlantic Ocean,

But when one the size of a small country settles near a wildlife-rich island, it becomes a major event. A23a, the world’s largest iceberg, has now run aground near South Georgia. Scientists, fishermen,

The one-time world's largest iceberg has run aground in shallow waters off the remote British island of South Georgia. The iceberg, known as A23a and approximately twice the size of Greater London, appears to be stuck and is expected to break apart along the island's south-west shores.