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Cryptic remains of tiny animals have turned up in an Antarctic lake

Author: Maria Temming / Source: Science News

drilling into Lake Mercer
LONG WAY DOWN Mud drawn from an Antarctic lake buried underneath a kilometer of ice contains what appear to be remnants of animals like crustaceans and water bears.

Much to their surprise, scientists in Antarctica have uncovered what appear to be remnants of tiny animals in mud dredged from a lake that has been covered by a thick mantle of ice for thousands of years.

The researchers on this expedition — known as the Subglacial Antarctic Lakes Scientific Access, or SALSA — are the first to sample Lake Mercer, a body of water about 600 kilometers from the South Pole. After drilling about a kilometer through the ice in late December, researchers lowered instruments that brought water and sediment up to the surface.

Looking at these samples under a microscope, the team found “some things that looked like squished spiders and crustacean-type things with legs … some other things that looked like they could be worms,” says expedition member David Harwood, a micropaleontologist at the University of Nebraska–Lincoln. The researchers also spotted what appeared to be the vestige of a famously durable…

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