Seals with antennas on their heads helped scientists solve an Antarctic mystery

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Scientists now have a better idea of why giant holes have been opening up in the ice of the Antarctic. A team explored one with the help of some equipment and seals with antennas stuck to their heads.

Scientists now have a better idea of why giant holes have been opening up in the ice of the Antarctic, and they were assisted by some unique field partners.

In 2016 and 2017, a hole of open water, called a polynya, appeared in the winter ice of the Weddell Sea in Antarctica. It eventually grew to about 19,000 square miles; roughly twice the size of Vermont. Though polynyas are not unusual, this large and frequent of a hole was a great opportunity for scientists to figure out why, exactly, these holes were appearing.

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