Green sea turtle

The green sea turtle (Chelonia mydas) is a cheloniid turtle of tropical and subtropical seas, recorded in more than 140 countries and nesting in over 80. Adults have a heart-shaped olive-green to dark brown carapace 78–112 cm long and weigh 68–190 kg, with a maximum curved carapace length near 153 cm. Uniquely among sea turtles, adults are wholly herbivorous, grazing seagrass and macroalgae; juveniles are omnivorous. The IUCN downlisted the global population from Endangered to Least Concern in 2025, while Mediterranean and East Pacific subpopulations remain threatened. All populations are on CITES Appendix I.