Striped Icebergs
Never has the sight of dead krill and trapped sediment on ice been more beautiful. The candy-striped icebergs seen floating around–most commonly around 1,700 miles south of Cape Town–are the result of ice crystals forming beneath an iceberg and rising up to the berg’s bottom, inevitably trapping dark-colored sediment and krill within it.
http://www.youtube.com/watch?v=OooXSHfzWR8