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The manatee originates from a plant eating animal and is a common ancestor to the elephant.

The manatee;s habitat is in the ocean off of coasts.

If the manatee became extinct there would not really be an effect except for an increase in plant life.

Humans help make manatees endangered because they pollute and the hunt them.

To prevent manatees from becoming extinct we can make it illegal to hunt them and we can get the word out about their endangerment.