sábado, 21 de novembro de 2009

Dolphins





Today i'm going to speak about dolphins.

The dolphins are animals cetaceans and very good swimmers.His great intelligence is the focus of many studies by scientists. In captivity you can train them to perform variety of tasks, some of great complexity.They can live 25 to 30 years and give birth to a cub at a time. They live in groups, are social animals, both of them, as with other animals and humans.Predators of dolphins are sharks, killer whales and especially humans. The tuna fishermen, tend to look for dolphins, which also hunt, at which there is a mutualism. The dolphin is the school of fish and the fishermen throw their nets trapping the fish and let the dolphins feeding and then pull the nets. Thus, both species benefit from the food. But often the dolphins end up screwing the networks, and may die.

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