Consider the following statements: 1. Some species of turtles are herbivores. 2. Some species of fish are herbivores. 3. Some species of marine mammals are herbivores. 4. Some species of snakes are viviparous. Which of the statements given above are correct?

1. Statement 1 is correct. Several species of turtles, such as the Green Sea Turtle, are primarily herbivores, feeding on seagrass and algae. 2. Statement 2 is correct. Many species of fish are herbivores, grazing on algae and aquatic plants (e.g., parrotfish, surgeonfish). 3. Statement 3 is correct. Certain species of marine mammals, like manatees and dugongs (Sirenians), are exclusively herbivores. 4. Statement 4 is correct. While most snakes lay eggs, some species, such as boas, anacondas, and many vipers, are viviparous, giving birth to live young. 5. Therefore, all four statements are correct.