Manatee Essay

2635 Words 11 Pages
Register to read the introduction… They have two forelimbs, called flippers, with three to four nails on each flipper. Their head and face are wrinkled with whiskers on the snout. The manatee's closest relatives are the elephant and the hyrax (a small, gopher-sized mammal), and they are thought to have evolved from a wading, plant-eating animal. The average adult manatee is about ten feet long and weighs between 800 and 1,200 pounds.[3] Manatees can be found in shallow, slow-moving rivers, estuaries, saltwater bays, canals, and coastal areas. They are particularly found where seagrass beds or freshwater vegetation flourish. Manatees are a migratory species; in the United States, they remain mostly in Florida during the winter. However, in the summer months, they can be found as far west as Texas and as far north as Massachusetts; sightings in Alabama, Georgia and South Carolina are more common during this time of year (see Figure 2). Water temperatures that fall below 21° C (70° F) cause manatees to move into warm water refuge …show more content…
inunguis) inhabits the Amazon River and its tributaries. Amazonian Manatees never venture into salt water. They are found from the mouth of the Amazon River to the upper reaches of the tributaries of Brazil, Colombia, Ecuador, Guyana and Peru.[6] West African Manatees are found in coastal marine and estuarine habitats and in freshwater river systems along the west coast of Africa from the Senegal River south to the Kwanza River in Angola. Areas included in their ranges are Gambia, Liberia, Guinea-Bissau, Guinea, Sierra Leone, Côte d'Ivoire, Ghana, Mali, Nigeria, Cameroon, Gabon, Republic of the Congo, and Democratic Republic of the Congo. They have been found living as high upriver on the Niger River as Gao, Mali.[7] Manatees are gentle and slow-moving animals. Most of their time is spent eating, resting, and traveling. They are also the sea’s only completely herbivorous marine mammal[8]; these herbivores are known for their generalized feeding habits and may ingest 60 species of freshwater and marine plants. They can consume 10-15% of their body weight in vegetation daily. …show more content…
Virginia Armbrust. Introduction to the World’s Oceans. Boston: McGraw-Hill Education, 2009.
[2] O'Shea, Thomas J., and Lynn B. Poche. "Aspects of Underwater Sound Communitcation in Florida Manatees (Trichechus manatus latirostris)." Journal of Mammalogy 87.6 (2006).

[3] Save the Manatee Club. Web. 16 Apr. 2010. .
[4] Edwards, Holly H., Bruce B. Ackerman, and John E. Reynolds. "Techniques and Technology Article Estimation of Detection Probability in Manatee Aerial Surveys at a Winter Aggregation Site." The Journal of Wildlife Management 71.6 (2007).
[5] Ibid.
[6] "WWF - Amazon Manatee." WWF - WWF. Web. 16 Apr. 2010. .
[7] “West African manatee.” Encyclopedia Britannica. 2010.
[8] Sverdrup, Keith A., and E. Virginia Armbrust. Introduction to the World’s Oceans. Boston: McGraw-Hill Education, 2009.
[9] Marshall, Christopher A., Paul S. Kubilis, Glenn D. Huth, and Virginia M. Edmonds. "Food Handling Ability and Feeding-Cycle Lengt of Manatees Feeding on Several Species of Aquatic Plants.” Journal of Mammalogy 81.3 (2000): 649-658.
[10] Ibid.
[11] Save the Manatee Club. Web. 16 Apr. 2010. .

Related Documents