- Manatees emit sounds under water. The chirps, whistles, or squeaks are probably produced in the larynx. They seem to make these sounds when they are frightened, sexually aroused, or interacting with each other.
- Vocalizations are an integral part of the cow-calf relationship. Cows respond to squeals of their calves from more than 61 m (200 ft.) away.
Manatees may communicate through sound, sight, taste, touch, and smell.