Manatee Welfare - Watercraft Strikes and Habitat Loss

Florida manatees and their relatives face persistent welfare challenges from boat propeller injuries, cold stress, and the loss of warm-water refuges essential to their survival through winter months.

Key Facts

Virtually every adult Florida manatee bears propeller scars from boat strikes, which are the leading cause of injury
Manatees are vulnerable to cold stress syndrome when water temperatures drop below 20 degrees Celsius
Loss of warm-water discharge from power plants has reduced critical winter refuge sites for manatees
Manatees must surface to breathe every few minutes, making them highly vulnerable to watercraft in shallow waters
Harmful algal blooms linked to nutrient pollution have caused mass mortality events in recent years

Welfare Considerations

Manatees endure ongoing welfare challenges from their interactions with human infrastructure. Propeller injuries cause severe lacerations that can be fatal or lead to long-term disability, chronic pain, and infection. Cold stress syndrome, triggered by inadequate warm-water access, causes muscle wasting, immune suppression, and death. The closure of power plant discharge sites has removed thermal refuges that manatees have depended on for decades, requiring managed alternatives.

What You Can Do

Observe reduced speed zones in manatee protection areas when boating
Support the Save the Manatee Club and other manatee rehabilitation organizations
Advocate for the establishment and maintenance of warm-water refuges
Report manatee sightings and disturbances to wildlife authorities
Reduce fertilizer use to minimize nutrient pollution and harmful algal blooms