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In the ocean off of Massachusetts, an unlikely alliance of scientists and fishermen is on a quest. They’re looking for mating codfish. The goal is not only to revive a depleted fish population but to save an endangered fishing community as well.

Cod were once so plentiful in New England waters that people used to say you could almost walk across their backs. Cod fueled a huge fishing industry. But now they’re scarce, mostly from overfishing.

Scientists, Fishing Fleet Team Up To Save Cod — By Listening

Photo credit: John Tlumacki/Boston Globe via Getty Images