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Geologist Charles Paull (Monterey Bay Aquarium Research Institute) investigates geologic features similar to pingos on the Arctic Ocean floor where methane bubbles through sediments and forms hundreds of low hills. On land, a pingo is a place where permafrost bulges beneath a dried lake bed like this one in northern Canada.

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Ocean “Pingos”

January 2012

Two nurse sharks hover over a baited cage

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Secrets of the Sediments

March 2010

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