Adult green sea turtle (Chelonia mydas agassizii) underwater off the west side of Isabela, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

chelonia mydas galapagos islands underwater isabela marine life aquatic ocean wildlife conservation ecotourism snorkeling biodiversity ocean habitat coral reef swimming turtle nature ecuador south america unesco ecosystem fauna tropical waters turquoise reef rocks peaceful serene indigenous species coastal waters endangered species environment ecosystem health natural habitat diving marine ecosystem surfacing algae seagrass shell marine biodiversity