jueves, 19 de septiembre de 2013

Pink dolphin

Commonly known as the Amazon river dolphin, is a freshwater river dolphin endemic to theOrinocoAmazon and Araguaia/Tocantins River systems of BrazilPeruBoliviaEcuadorColombia and Venezuela.


DESCRIPTION

The Amazon river dolphin is one of river dolphins included in the paraphyletic group classified as the superfamilyPlatanistoidea. Although not a large cetacean in general terms, this dolphin is the largest freshwater cetacean; it can grow larger than a human. Body length can range from 1.53 to 2.4 m (5.0 to 7.9 ft), depending on subspecies. Females are typically larger than males. The largest female Amazon river dolphins can range up to 2.5 m (8.2 ft) in length and weigh 98.5 kg (217 lb). The largest male dolphins can range up to 2.0 m (6.6 ft) in length and weigh 94 kg (210 lb).


ECOLOGY

The Amazon river dolphin is found throughout the Amazon and Orinoco. It is particularly abundant in lowland rivers with extensive floodplains. During the annual rainy season, these rivers flood large areas of forests and marshes along their banks. The Amazon river dolphin specialises in hunting in these habitats, using its unusually flexible neck and spinal cord to maneuver among the underwater tree trunks, and using its long snout to extract prey fishfrom hiding places in hollow logs and thickets of submerged vegetation.
When the water levels drop, the dolphins move either into the main river channels or into large lakes in the forest, and take advantage of the concentrated prey in these reduced water bodies. They feed on crustaceans, crabs, small turtles, catfish, piranha, shrimp, and other fish.



we chose the pink dolphin because is a beautiful animal. her colour it's striking. we can help the pink dolphin for example not using nylon netting.

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