Trichechus manatus T-Shirt

As its name implies, the West Indian Manatee lives in the West Indies, or Caribbean, generally in shallow coastal areas. However, it is known to withstand large changes in water salinity, and so have also been found in shallow rivers and estuaries. It is limited to the tropics and subtropics due to an extremely low metabolic rate and lack of a thick layer of insulating body fat. During summer, these large mammals have even been found as far north as Cape Cod, Massachusetts. The Florida manatee, (Trichechus manatus latirostris) a subspecies of the West Indian manatee, is the largest of all sirenians. Florida manatees inhabit the most northern limit of sirenian habitat. Over three decades of research by universities, governmental agencies, and NGOs, have contributed to our understanding of Florida manatee ecology and behaviour, which is more than we know about any other species. They are found in fresh water rivers, in estuaries, and in the coastal waters of the Gulf of Mexico and the Atlantic Ocean. Females usually have their first calf when they are about 4 years old. Normally they only have one calf every 2-5 years, but there are rare occurrences of twins. The family unit consists of mother and calf, which remain together for up to 2 years. Males aggregate in mating herds around a female when she is ready to conceive, but contribute no parental care to the calf. Florida manatees may live to be greater than 60 years old in the wild. The biggest single threat to Florida manatees is death from collisions with recreational watercraft. The other subspecies of the West Indian manatee is sometimes referred to as a Caribbean manatee (Trichechus manatus manatus). Antillean manatees are sparsely distributed throughout the Caribbean and the Northwestern Atlantic Ocean, from Mexico, east to the Greater Antilles, and south to Brazil. They are found in French Guiana, Suriname, Guyana, Trinidad (however there has been a lack of recent sightings), Venezuela, Colombia, Panama, Costa Rica, Nicaragua, Honduras, Guatemala, Belise, Mexico, Cuba, Haiti, Dominican Republic, Jamaica, and Puerto Rico. Historically Antillean manatees were hunted by local natives and sold to European explorers for food. Today they are threatened by loss of habitat, poaching, entanglement with fishing gear, and increased boating activity. Several of Sirenian International's scientists study Antillean manatees in Belise, which may be the last stronghold for the subspecies. Funds for research, education, and conservation projects are desperately needed in other Central American nations. Photography by Luis Eduardo Sandoval Bavaresco