Slideshows - Frozen Waves in Antarctica

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. All images courtesy of Maria van Heerden

Brown, black and yellow lines are caused by sediment, picked up when the ice sheet grinds downhill towards the sea

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

Iceberg slip in two to reveal the dark blue inside

Antarctica's frozen waves - Nature is amazing

The water froze the instant the wave broke through the ice

That's what it is like in Antarctica where it is the coldest weather in decades

Water freezes the instant it comes in contact with the air

The temperature of the water is already some degrees below freezing

Just look at how the wave froze in mid-air!

Isn't this amazing?