David Helvarg
David Helvarg has written at least 4 books. Their most popular book is Saved by the Sea: Hope, Heartbreak, and Wonder in the Blue World with 1 save with an average rating of -⭐.
 Saved by the Sea: Hope, Heartbreak, and Wonder in the Blue World
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 Blue Frontier: Dispatches from America's Ocean Wilderness
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 Rescue Warriors: The U.S. Coast Guard, America's Forgotten Heroes
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 The golden shore
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