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Brinicles

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Death Lurks Under Antarctic Ice

Originally Published 2 years ago — by IFLScience

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Source: IFLScience

Brinicles are salty frozen fingers that descend towards the ocean floor in the Antarctic sea ice. They are formed when extra-salty brine leaks out into the open sea below the ice layer, sinking due to its weight and absorbing heat from the surrounding water. The result is a streamer of sinking brine that pulls a shroud of frozen seawater around itself as it descends, freezing anything unlucky enough to stumble into its path. Brinicles have more in common with hydrothermal vents than stalactites and could have played a role in the origins of life on Earth and other far-distant worlds.