By Stephanie Jenouvrier (*) Emperor penguins thrive on Antarctica’s coastlines in icy conditions any human would find extreme. Yet, like Goldilocks, they have a narrow comfort zone: If there’s too much sea ice, trips to bring food from the ocean become long and arduous, and their chicks may starve. With too little sea ice, the chicks are at risk of drowning.
Thousands of emperor penguin chicks drowned when the sea-ice on which they were being raised was destroyed in severe weather. The catastrophe occurred in 2016 in Antarctica's Weddell Sea. Scientists say the colony at the edge of the Brunt Ice Shelf has collapsed with adult birds showing no sign of trying to re-establish the population.