How many known attacks have manatee had on people?

Manatees are generally gentle and non-aggressive creatures, and there are no documented attacks on people that resulted in serious injury. While they may occasionally bump into swimmers or boats out of curiOSity, these interactions are typically harmless. Incidents are rare and usually involve accidental contact rather than intentional aggression. Overall, manatees are known for their docile nature and pose little threat to humans.