West Indian manatees face a persistent and significant welfare threat from boat strikes in Florida's waterways. Propeller injuries cause severe trauma, chronic pain, and death — and the welfare of individual manatees surviving strikes is a major concern for wildlife rehabilitation professionals.
Propeller strikes cause acute, severe trauma: lacerations from rotating blades can sever limbs and penetrate body cavities, causing immediate intense pain, blood loss, and shock. Manatees that survive strikes but are not found and rehabilitated suffer slow, agonising deaths from infection and blood loss. Even successfully rehabilitated manatees may carry permanent injuries — missing flippers, chronic pain from scarring — that affect their quality of life in the wild. The rehabilitation process itself carries welfare costs: capture stress, surgical procedures, extended captivity. The 2021-22 starvation event added a new welfare dimension: slow starvation from seagrass collapse caused widespread suffering across the population. The welfare crisis is fundamentally driven by human activity — boat traffic, coastal development, and water pollution.