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Julia Hager
Weddell seals do not yet appear to be much affected by climate change, while crabeater seals are more likely to suffer as warming continues.
Citizen scientists helped American researchers estimate the global population of Antarctic Weddell seals for the first time using satellite imagery.
Before young Weddell seals can begin hunting on their own, they must learn how to navigate safely under the sea ice and get to their breathing holes.
The study of Weddell seals, which has been ongoing for over half a century, could not be interrupted and so hundreds of seal pups were counted and tagged again in 2020.
