They are among the largest reptiles in the world, inhabit almost all the oceans and are so ancient that they shared the planet with dinosaurs over 210 million years ago. The Caretta Caretta turtle ("loggerhead" in English for its large and muscular head) is a symbol of the Mediterranean and of Greece in particular: our coasts host 60% of the nests in the Mediterranean area and two of the most important breeding sites for the species, one in Zakynthos and the other in the western Peloponnese.