BBC News - Science & Environment: VIDEO: Swimming in a cave of feeding sharks

BBC News - Science & Environment The latest stories from the Science & Environment section of the BBC News web site.

VIDEO: Swimming in a cave of feeding sharks Dec 30th 2011, 11:10 Most of us know that Australia's Great Barrier Reef is one of the natural wonders of the world, but did you know it is home to sharks that walk on land and deadly snails that hunt fish?

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