Learning to read the ocean, performing CPR on a dolphin, and leading daring (and sometimes foolish) rescues with Ed Vodrazka, an ocean lifeguard in California. What are the signs that someone is in trouble in the water? And how do you stay vigilant after many hours in the tower?

Ed is the author of a couple of books about ocean lifeguards, including Stories from Sea Level: The Heroic and Humorous Adventures of California’s Ocean Lifeguards.

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