Photographs posted in Mail Online
Whiteness of icebergs are caused by air bubbles trapped while they are freezing but if icebergs freeze quickly or somehow bubbles are not contained, they become blue.
“Blue stripes are often created when a crevice in the ice sheet fills up with melt 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” (Mail Online).
Via. Mail Online
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