Scientists working to save a coral species from extinction transported 30 pieces from nurseries off the Florida coast to a hatchery on land Wednesday, fearing that warming waters could trigger a mass bleaching event this summer that could wipe them out.
Elkhorn coral populations were decimated by a 2023 heat wave and a less severe one in 2024 that left them functionally extinct — meaning remaining colonies are too small and far apart to reproduce in the wild — from Broward County to the Florida Keys, said Diego Lirman, associate professor of marine biology at the University of Miami. Heat causes coral to bleach, which can be fatal if it lasts long enough.
Researchers have been propagating them at coastal nurseries, but decided to bring some ashore now because of indications that 2026 will be “a really bad year” for bleaching — perhaps even worse than 2023, Lirman said. Coral has been showing indications of heat stress as water temperatures rise…