West Indian manatees are large, slow-moving marine mammals whose welfare is chronically compromised by boat strike injuries, cold stress, and habitat degradation. Protection measures that reduce human-caused trauma are the highest-priority welfare interventions for this vulnerable species.
Manatees struck by boats experience traumatic injuries including deep propeller lacerations, broken ribs, and internal organ damage. Animals that survive strikes often carry lasting injuries affecting mobility, feeding capacity, and thermoregulation. Rehabilitation of injured manatees is resource-intensive and not always successful. The combination of boat strike trauma, cold stress vulnerability, and food supply degradation creates a multi-stressor welfare environment for individual animals. Speed zone compliance and enforcement in key habitat areas produces direct welfare benefits by reducing strike frequency and severity. Seagrass restoration addresses the nutritional foundation of manatee welfare at ecosystem scale.