The Bay of Laganas in Zakynthos, Greece is considered the largest nesting ground for Caretta Caretta loggerhead sea turtles in the Mediterranean. Loggerhead sea turtles have existed for 250 million years and are endangered. Each summer, hundreds of loggerheads return to Zakynthos to mate and lay their eggs on the beaches in Laganas Bay, with each brood containing around 120 eggs that take 50 days to hatch.