NatureServe Conservation Status
Rounded Global Status Rank: G2 - Imperiled
Reasons: Small range in coastal areas from the southeastern U.S. to northeastern South America; population size probably not much larger than a few thousand adults; high mortality rate, often a result of boat collisions (Florida, Puerto Rico) and hunting (elsewhere); threat from boat collisions is increasing despite improved regulations; low reproductive rate; population stable or possibly increasing in Florida and Puerto Rico, but a good estimate of the population in Florida is now several years old, status and trend poorly known elsewhere.
Intrinsic Vulnerability: Highly vulnerable
Comments: Reproductive rate is very low; a healthy adult female produces just one calf every three years.
Other Considerations: This species benefits from some human disturbances, such as thermal pollution.