Mystery of giant Antarctic ice holes solved by robots, tricked-out seals – CNET

Mystery of giant Antarctic ice holes solved by robots, tricked-out seals – CNET

Elephant seals swimming under the sea ice with temporary satellite tags collected information on water conditions and beamed the data back to shore. 
Dan Costa/UC Santa Cruz
Mysterious giant holes spotted in 2016 and 2017 in the icy winter surface of an Ant…
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