Manatees are slow-moving, herbivorous marine mammals facing chronic threats from boat strikes, habitat loss, and cold stress events. Their welfare requires both individual protection and systemic environmental management.
Manatee welfare is threatened by a convergence of human-caused pressures that interact to compound individual suffering. Boat strike injuries cause acute pain and lasting physical disability; scarred individuals may suffer from chronic wound complications for years. The 2021 unprecedented mortality event — driven by seagrass collapse from nutrient pollution — caused thousands of manatees to suffer prolonged starvation, a welfare emergency that prompted emergency supplemental feeding programmes. Cold stress events drive manatees to congregate around power plant warm water discharges, creating artificial dependency on industrial heat sources that become welfare chokepoints when plants close. Long-term welfare requires seagrass restoration, boat speed restrictions, and climate-resilient warm water habitat.