Not all sharks are big and scary, though. A NOAA biologist found this tiny pocket shark off the coast of the Gulf of Mexico, only the second one that's ever been seen. It weighs about as much as ...

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"When you're on top of the water, and you just see the fin, I think it's more scary because it's the unknown. But when you are underwater and you see the shark it is much less scary. When I saw ...

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I’ve never had one that close and to have it circling three times was very scary.” The incident occurred just days before a young commercial diver was killed by a shark in New Zealand this week.