Adult green sea turtle (Chelonia mydas agassizii) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

galapagos islands underwater marine life ocean ecuador swimming marine vegetation biodiversity wildlife conservation tropical waters aquatic ecosystem endemic species snorkeling diving oceanic environment marine biodiversity reptiles natural habitat turtle behavior marine plants turquoise water wildlife watching ecological balance marine tourism oceanic exploration coral reefs animal movement nature exploration unique species aquatic life habitat protection rocky seafloor coastal ecosystem underwater ecosystem aquatic biodiversity underwater habitat adult green sea turtle chelonia mydas agassizii galapagos island