Thomas Peschak/National Geographic

Sharks are feared by many of us, but a lot of that feeling probably emerged because of pop culture. Films like "Jaws" or "Deep Blue Sea" or even the "Sharknado" series influence the way we think of them.

But what are the realities of shark behavior, and how important are they in an ecosystem?

That is part of what photojournalist Thomas Peschak has made his life’s work, and he’ll be discussing it Wednesday night at 7:30 in the Mesa Arts Center as part of the National Geographic Live Speakers series. His presentation is titled "Wild Seas, Secret Shores."

The Show talked with him and asked him why we shouldn't be so afraid of sharks.

Thomas Peschak/National Geographic

Thomas Peschak/National Geographic

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