A turtle is a reptile with a hard, protective shell that covers its body. Turtles are known for their slow movement and their ability to retract their head and limbs into their shell for protection. They are found in various habitats, including oceans, rivers, lakes, and land. Turtles are omnivores, meaning they eat both plants and animals. Some common species of turtles include the green sea turtle, the snapping turtle, and the box turtle. Turtles are often kept as pets, but it is important to ensure that they are properly cared for and their needs are met.