West Indian Manatee: Official Sea World Marine Mates Talking Plush Stuffed Animal West Indian Manatee: Approximately 13 inches long. Makes Manatee sound. Says: I'm a West Indian Manatee. My nickname is Sea Cow. Also says: I'm friendly and slow moving. I like to eat and rest. Sample fact from tag (1 of 5): The Manatee can live to be 60 years old. More details below.