The Hawaiian green sea turtle, also known as Honu, is a large marine reptile found in the warm waters of the Hawaiian Islands. These turtles can weigh up to 400 pounds and have a distinctive heart-shaped shell. They primarily feed on seagrass and algae, which gives them their greenish color. Hawaiian green sea turtles are known for their long lifespan, often living over 50 years. They are a protected species under the Endangered Species Act due to threats like habitat loss and entanglement in fishing gear. Conservation efforts are in place to help preserve their populations.