Ice Adrift From Warming Scrapes Antarctic Seabed Bare

Your selfish ceiling fan usage is causing "black pools of death"

These icebergs can vary dramatically in size—from the size of fists to small countries, Barnes said.

Once freed from the fast ice, icebergs are blown by winds and carried by sea currents until they smash into the seabed in shallow depths.

"They not only kill virtually everything underneath on the seabed—mainly animals—but crush rock and reshape the seabed," Barnes said.
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In some areas, it can promote diversity, where it turned over nutrient-rich sediments and pushed out dominant grazers, such as sea urchins.

In other locations, however, the result could be catastrophic, "producing black pools of death," she said.