Manatees are going extinct and less and less are in the world. There are only 3000 left in the water. What do us as humans do now, and what if they all go, and so what, lastly how? this is apparentrly happening because of the jet boats and jet skies that go through the area of where the manatees live. the manatees are so big so they can't get out of the way fast enough to not get hit. once they get hit they either get killed or seriously injured.