Wild Manatee Welfare: Boat Strikes and Cold Stress Syndrome

The welfare challenges facing manatees from propeller injuries, cold stress, and habitat loss in Florida and the Caribbean.

Key Facts

West Indian manatees are listed as threatened with approximately 7,500 individuals in Florida waters
Boat propeller strikes are the leading cause of manatee injury and death — most adults carry propeller scars
Cold stress syndrome kills manatees that cannot migrate to warm water refuges during winter cold snaps
Seagrass die-offs have caused unprecedented manatee starvation events — 1,100 died in 2021 alone
Warm water refuges including power plant outflows have become essential for manatee winter survival

Welfare Considerations

Manatees face a convergence of welfare threats that have intensified dramatically in recent years. Propeller strikes — which are largely preventable through speed zones and propeller guards — cause traumatic injuries that are painful and debilitating. The 2021 mortality event — driven by seagrass collapse from water quality degradation — represents a mass starvation event that caused enormous suffering at scale. Cold stress syndrome creates an acute welfare crisis each winter for animals unable to reach thermal refuges. Each of these threats has clear human causes and human solutions, making manatee welfare a matter of policy choice.

What You Can Do

Slow down in manatee zones and look before you operate in Florida and Caribbean waters
Support Save the Manatee Club and other organizations advocating for stronger boat speed regulations
Advocate for water quality improvements that support seagrass recovery in manatee habitat
Donate to manatee rescue and rehabilitation programs that respond to cold stress and injury events