De Gelder, a Shark Week veteran of over a decade, has built a career on surviving the unthinkable. While working as a Navy bomb disposal diver in 2009, De Gelder was attacked by a bull shark, losing both his right hand and leg to the animal.

I think it's one of the best movies ever made. And my concern is not about Jaws the movie or any other shark movie. It's in people that can't tell reality from fiction. I think we should be more concerned about those folk.

Now a bonanza of viewership, the 37-year-old event that launched as a meager presentation of 10 basic programs and has also courted detractors over the years.

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An annual summer tradition, Shark Week is back for its 37th year, giving viewers an array of content to binge from the Discovery Channel.

Discovery Channel's 37th annual Shark Week that began July 20. To celebrate, Here are some facts about these incredible animals.