The world’s biggest iceberg, known as A68a, is bearing down on the British Overseas Territory of South Georgia. The BBC reports that the Antarctic ice giant is a similar size to the South Atlantic island, and there’s a strong possibility the berg could now ground and anchor itself offshore of the wildlife haven. If that happens, it poses a grave threat to local penguins and seals. And it goes without saying that all creatures living on the seafloor would be crushed where A68a touched down – a disturbance that would take a very long time to reverse.