During the past 15 years, around 10,000 km2 of Antarctic ice sheets have disintegrated into the Weddell Sea. This has facilitated the study of the sea floor, where scientists have been amazed to find that the benthic ecosystem has recovered much more quickly than expected after such a devastating event. But if climate change increases the melting of the ice sheet, the re-colonization of the seabed may prove to be impossible