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An underwater “icicle of death” which sinks to the seabed destroying everything it comes into contact with has been caught on camera for the first time. The sinking brine is so cold that it causes the seawater to freeze around it. BBC film crews recorded the brinicle for the first time ever as it sunk to the bottom of the sea in Antarctica. When it hits the seabed, a web of ice spreads killing sea urchins and starfish. | 
