GUANAHACABIBES PENINSULA , July 12 — On Cuba’s far-flung Guanahacabibes peninsula, park guard Roberto Varela watches as a green sea turtle lumbers ashore and a ritual as old as the dinosaurs unfolds.
Mounds of red-brown sargassum seaweed pile up on the sand where years ago there was little, blocking the turtles’ path to nesting grounds. Dead coral, conch and rocks litter the beach, signs of increasingly frequent and intense hurricanes. And more females turtles are hatching, a phenomenon scientists attribute to rising nest temperatures.
Sea turtles have historically moved when temperatures or sea levels rose, seeking more favourable beaches to lay their eggs. But safe nesting havens in the region are fewer now as hotels, roads, lights and homes take over much of nearby Florida’s coast, as well as Mexico’s Yucatan Peninsula and many Caribbean islands.
The peninsula lies at the crossroads of the Caribbean and Gulf of Mexico, a magnet for sea turtles navigating ocean currents. Cuba contributes little to the carbon emissions changing the climate, but disproportionately suffers such consequences as rising sea levels.Signs of hope glimmer on this beach.
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