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Dave Canterbury and Cody Lundin of "Dual Survival" hope to find out if tiger sharks hunt differently as night. The sharks seem more comfortable at night. Maybe a little too comfortable!
Watch Shark Week videos and celebrate shark week every week of the year. Don't miss Shark Week, only on Discovery!
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Playlist: Best of Shark Week 2011
Shark Week Videos
Swimming with a Baby Great WhiteShark expert Andy Casagrande dives cage-free with...