West Indian manatees face ongoing threats from boat propeller injuries, habitat loss, and red tide events, making conservation and human-behavior change critical to their survival.
Propeller injuries cause severe lacerating wounds that cause acute pain and may leave manatees with permanently compromised mobility. Many manatees survive propeller strikes but carry lifelong disfiguring scars and may experience chronic pain from bone damage. Starvation from seagrass loss causes prolonged suffering — manatees lose body condition over weeks before dying. Red tide toxin ingestion causes neurological symptoms including disorientation and paralysis before death. Cold stress syndrome — when manatees cannot reach warm water — causes muscle and organ damage. The cumulative welfare burden on individual manatees is high: virtually every adult Florida manatee bears evidence of at least one boat strike, representing a population living under chronic human-caused injury risk.