Manatee - wild spotlight


Manatees are sometimes called sea cows, and their languid pace lends merit to the comparison. However, despite their massive bulk, they are graceful swimmers in coastal waters and rivers. Powering themselves with their strong tails, manatees typically glide along at 5 miles (8 kilometers) an hour but can swim 15 miles (24 kilometers) an hour in short bursts.

Manatees are usually seen alone, in pairs, or in small groups of a half dozen or fewer animals. From above the water's surface, the animal's nose and nostrils are often the only thing visible. Manatees never leave the water but, like all marine mammals, they must breathe air at the surface. A resting manatee can remain submerged for up to 15 minutes, but while swimming, it must surface every three or four minutes.

There are three species of manatee, distinguished primarily by where they live. One manatee population ranges along the North American east coast from Florida to Brazil. Other species inhabit the Amazon River and the west coast and rivers of Africa.

Manatees are born underwater. Mothers must help their calves to the surface so that they can take their first breath, but the infants can typically swim on their own only an hour later.
Manatee calves drink their mothers' milk, but adults are voracious grazers. They eat water grasses, weeds, and algae—and lots of them. A manatee can eat a tenth of its own massive weight in just 24 hours.

Manatees are large, slow-moving animals that frequent coastal waters and rivers. These attributes make them vulnerable to hunters seeking their hides, oil, and bones. Manatee numbers declined throughout the last century, mostly because of hunting pressure. Today, manatees are endangered. Though protected by laws, they still face threats. The gentle beasts are often accidentally hit by motorboats in ever more crowded waters, and sometimes become entangled in fishing nets.

West Indian manatees are large, gray aquatic mammals with bodies that taper to a flat, paddle-shaped tail. 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). Manatees are believed to have evolved from a wading, plant-eating animal. The West Indian manatee is related to the West African manatee, the Amazonian manatee, the dugong, and Steller's sea cow, which was hunted to extinction in 1768. The average adult manatee is about 10 feet long and weighs between 800 and 1,200 pounds.

THREATS

The greatest threat to the West Indian manatee in Florida is collisions with watercraft such as boats and jet skis which happen frequently in the densely populated coastal regions and accounts for 35% of known causes of death. The disturbance caused by water activities may also be disrupting the behaviour of manatees which in turn may be detrimental to their health or survival. In addition to boat strikes, manatees can also be come trapped and crushed in water control devices such as flood control structures or caught in fishing equipment.  Loss and destruction of the warm water habitats in which the Florida manatee aggregates is also cause for concern for a species so vulnerable to cold water mortality. Declines in warm water habitats and water quality are directly linked to the increasing human population.

The threats to the Antillean manatee are the same as those faced by the Florida manatee with the additional threat of hunting, which occurs less frequently than in the past but is still considered as a significant threat in some central American countries. Pollution of coastal areas is also frequently reported and presents a threat to the quality of habitat in which the West Indian Manatee is found.
Threat

ARKive video - Antillean manatee - overviewARKive video - Antillean manatee underwaterARKive video - Antillean manatee swimming underwater

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