Like a lightning bolt hurled down from Mount Olympus, an icy “finger of death” strikes at sea life beneath the Antarctic ice shelf in what is surely one of the most jaw-dropping natural history sequences ever filmed.
Called a brinicle, or brine icicle, this sinister tube of ice grows over a matter of hours as super-salty brine leeches from the forming sea ice above. This video — a scene from Frozen Planet, premiering on Discovery Channel on March 18 — illustrates how this happens, as well as the deadly consequences for the slow-moving marine invertebrates in its path.
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