Seroiusly, I saw the episode and the footage that the guy got. He got footage on several occasions. It was really incredible. I hope they can give us some more info on these things. They do looke allot like Manatees but larger and the Trident tail (wich was in the footage) was really creepy. One marine biologist speculates they are Pinnepeds (seal family), which Manatees are not. The longer snout was a bit odd as well.