The Green sea turtle is a large marine reptile known for its distinctive heart-shaped shell, which can reach up to 5 feet in length. These turtles are primarily herbivorous, feeding mainly on seagrasses and algae, which contribute to their name. They are found in tropical and subtropical oceans around the world. Green sea turtles are known for their long migrations, often traveling thousands of miles between feeding and nesting sites. They are listed as endangered due to threats such as habitat loss, pollution, and poaching. Conservation efforts are ongoing to protect their populations and habitats.