A photographer took a rare picture: sleeping sperm whales

Franco Banfi is a professional underwater photographer. Recently he's managed to take an extremely rare picture of a group of sperm whales... while they were sleeping! It happened in the Caribbean, off the coast of the Dominican Islands.

All of a sudden these whales stopped moving and took vertical position. Last time this kind of behaviour was registered in 2008, when a team of biologists from the UK and Japan stumbled upon a group of sperm whales that were perfectly still. Further scientific study showed that sleeping takes 7% of whales' life: they rest 6 to 24 minutes at a time.

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The diver you see on the pictures is Sabrina Belloni.

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Check this out:

Source: youtube

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