They don't prey on humans and are not dangerous to swim with.

Would a manatee hurt a human?

A manatee won't bite you! Manatees are naturally gentle and docile creatures, and they love human company, too. ... Actually, manatees will not attack you even if you behave inappropriately—though such behavior is highly discouraged.

Why should you not touch manatees?

You are not supposed to touch manatees because that can trigger a change in behavior in the animals. Manatees are already an imperiled species because of their easygoing and curious nature, which predisposes them to several risks including being mowed down by speed boats.