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

chelonia mydas underwater isabela galapagos islands marine life ecuador south america ocean wildlife aquatic swimming nature conservation biodiversity turtles ecosystem surroundings reef coral clear water species oceanography aquatic flora sea swimming behavior habitat tropical natural environment organisms coast marine biology picturesque exploration adventure snorkeling diving tranquility ocean currents environment fauna coastlines vibrant slow moving peaceful animal behavior ecological marine conservation biodiversity hotspot