Magnified image of coral surface driving the flow of water (c) O Shapiro et al/ Weizmann Institute of Science/MIT
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Footage shows coral stirring water

Coral reefs may look static to the naked eye, but scientists have now seen "violent" activity on their surface.

Using powerful microscopes, researchers filmed this footage showing microscopic hairs on the surface of corals "stirring up" the surrounding water.

They say that these swirls of water draw nutrients towards the coral, and may also drive away potentially toxic waste products.

Footage courtesy of Orr Shapiro, Assaf Vardi, Weizmann Institute of Science/ Vicente Fernandez, Roman Stocker, MIT/ PNAS

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