An ultra-swimmer tried to eat as much as a tiger shark and ended up consuming 40,000 calories in a day

Tech Insider
Mike Heithaus and Ross Edgley on a boat with sharks swimming behind and Heithaus holding a giant piece of gelatin
Before he can eat like a tiger shark, Ross Edgley, along with marine biologist Mike Heithaus, needs to figure out how much the fish consume in a single bite.

National Geographic/Nathalie Miles

Here are the most common ways sharks attack and how to survive — and avoid — them

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A Great White Shark surfaces from the water near a person’s outstretched hand.
A Great White Shark surfaces from the water near a person’s outstretched hand.

Education Images/Universal Images Group/Getty Images

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