![VIDEO: Researchers Record a Great White Shark Napping for the First Time Ever](http://outdoors360.com/wp-content/uploads/thumbs_dir/maxresdefault-5-oxiufih17ullnqfdbraa76jrecvhqnvnbt5kse16zk.jpg)
We've all heard that sharks must constantly swim or they'll die. That doesn't exactly make it seem like they have much time for sleeping; at least not in the traditional sense that we're used to. Researchers made an interesting discovery with the help of a robotic submersible while following a ...
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