A refrozen melt pool inside a large crevasse just inboard of the front of Helheim glacier. Scientists onboard the MY Arctic Sunrise are collecting data from the 'ice ocean interface' in Sermilik Fjord (at Helheim glacier). This glacier, found by glaciologists to be rapidly accelerating, is central in the rapid and unpredicted (ice) 'mass loss' that Greenland has been experiencing in recent years.