Smithsonian manatee count informs policy recommendations
(PHYSorg.com Biology)

All three of the world`s manatee species are threatened with extinction: the Amazonian Manatee, the African Manatee and the West Indian Manatee. The Antillean Manatee, an endangered subspecies, feeds and calves in rivers and coastal wetlands from the Gulf of Mexico to Brazil. Smithsonian scientists were the first to use sonar to estimate Antillean Manatee populations in the murky waters of Panama`s internationally protected San San Pond Sak wetlands.