The diamondback terrapin is a species of turtle found primarily in coastal salt marshes and estuaries along the eastern and southern United States. They are known for their distinctive diamond-patterned shells, which can vary in color from gray to brown. These turtles are medium-sized, typically measuring between 4 to 10 inches in length. Diamondback terrapins are omnivorous, feeding on a diet that includes crabs, mollusks, and various aquatic plants. They play an important role in their ecosystem by helping to maintain the balance of marine life. Conservation efforts are in place to protect their habitats from threats such as pollution and habitat loss.