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Be sure you go all the way to the end. Malia
INCREDIBLE ANTARCTIC ICEBERGS
Blue stripes are often created when a crevice in the ice sheet fills up with melted water and freezes so quickly that no bubbles form. When an iceberg falls into the sea, a layer of salty seawater can freeze to the underside. If this is rich in algae, it can form a green stripe. Brown, black and yellow lines are caused by sediment, picked up when the ice sheet grinds downhill towards the sea.