The once-largest iceberg in the world, A23a, has dramatically shrunk by 80% since May. Initially the size of Rhode Island, it's disintegrating rapidly after being caught in a South Atlantic current near South Georgia Island. Scientists at the British Antarctic Survey attribute this to the strong Southern Antarctic Circumpolar Current Front. While A23a briefly held the title, iceberg D15a is now the largest. The increased frequency of large icebergs near South Georgia Island is linked to climate change, although more data is needed to confirm increased megaberg formation.

Prepared by Olivia Bennett and reviewed by editorial team.