What is a member of an order of aquatic herbivorous mammals and is also called the sea cow?

A member of the order of aquatic herbivorous mammals known as the sea cow is the manatee. Manatees are large, slow-moving marine mammals found in warm coastal waters and rivers, primarily in the Caribbean and along the southeastern coast of the United States. They primarily feed on seagrasses and other aquatic vegetation, contributing to the health of their ecosystems.