At first glance these beautiful images from the Antarctic appear to show 50-ft tall waves that have been instantly frozen as they break. Some people have posted the pictures online, taken by scientist Tony Travouillon at Dumont D'Urville, with a description claiming they are a tsunami wave which was frozen. But although email chains and internet forums back this claim up, what is really pictured is the natural phenomenon of blue ice.
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© Tony TravouillonHard work: Mr Travouillon travelled to the Antarctic while studying for his PhD from the Australian university of New South Wales, between 2001-2004
These freezing blue towers were created when ice was compressed and the trapped air bubbles were squeezed out. During the summer the surface ice melts and new ice layers compress on top. The ice appears blue because when when light passes through thick ice, blue light is transmitted back out but red light is absorbed.

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