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In shallow water not far from the Florida Keys’ famed Seven Mile Bridge, a herd of the state’s flamboyantly pink queen conchs is struggling to survive. Warming seas and wild swings in temperature have shut down their reproductive impulses in the waist-deep water, leaving them to creep along the ocean floor, searching for food but not love. Meanwhile, just a few miles away in deeper, cooler waters, the iconic mollusks mate freely. So scientists have a rescue plan: load the inshore conchs into milk crates, ferry them to colonies in deep water, and let nature run its course. As climate change fast tracks ocean warming, the researchers hope their plan hatches enough baby conchs to help boost the flagging population. “Once you put them in a more appropriate temperature regime, snails have a remarkable capability to heal themselves,” says Dr. Gabriel Delgado, a conch scientist with the Florida Fish and Wildlife Conservation Commission who is leading the pilot project. “Now you have a contributing member to future populations.” Last month, Delgado and a team of scientists set out to collect some potential members from a grassy patch of ocean floor just off Molasses Key, near Marathon. Except for a brisk wind and choppy waters, the day was perfect: The Keys’ stunning turquoise waters glowed. “If we get 50, I’ll be happy,” Delgado yelled over the boat engine as the Seven Mile Bridge loomed. Scientists have been working for decades to understand what’s ailing the conchs and revive their populations, which were once so plentiful that the Keys declared itself the Conch Republic. At the turn of the century, queen conchs littered the ocean floor, ambling across flats and hard bottom, tidying up by grazing on algae. “If you let them put their mouth on your finger, you can feel them licking you,” Delgado says. “It's like a cat's tongue.” They were part of a population that once stretched across the Caribbean and seeded a powerful “larval train”—tiny conch hatchlings carried to Florida and the Bahamas by the fast-moving Gulf Stream and other currents. Tap the link below to continue reading. Story by Jenny Staletovich in collaboration with Science Friday. 📸 Patrick Farrell (@epatrickfarrell)

Helping queen conchs mate in the Florida Keys

Helping queen conchs mate in the Florida Keys

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