Antarctic species dwindle as icebergs batter shores year-round

As the planet has warmed, massive losses of sea ice in winter have left icebergs along the Antarctic free to roam for most of the year. As a result, boulders on the shallow seabed -- once encrusted with a rich assemblage of species in intense competition for limited space -- now mostly support a single species. The climate-linked increase in iceberg activity has left all other species so rare as to be almost irrelevant.

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