A school of Humphead Parrotfish descend on the coral reef to feed and turn the age old coral into a fine sand that, in turn, forms islands. Fascinating video from BBC natural history show Blue Planet. Narrated by Sir David Attenborough. Taken From Blue Planet Subscribe to the BBC Earth YouTube channel: www.youtube.com/subscription_center?add_user=BBCEarth BBC Earth YouTube Channel: www.youtube.com/BBCEarth BBC Earth Facebook www.facebook.com/bbcearth BBC Earth Twitter www.twitter.com/bbcearth BBC Earth Instagram www.instagram.com/bbcearth/?hl=en Visit www.bbc.com/earth/world for all the latest animal news and wildlife videos This is a channel from BBC Worldwide who help fund new BBC programmes.

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