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Uploaded on Apr 29, 2010
Sir David Attenborough looks into why sharks are one of the most successful predators on the planet. Watch this interesting short video on the basic elements of a shark and why sharks are more intelligent than most other fish. From the BBC documentary Smart Sharks: Swimming with Roboshark. Visit http://www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel here: http://www.youtube.com/bbcearth