This video is the closeup of the supposed creature on the shoreline.
Referencing Thread : http://www.paranexus.org/index.php?topic=977.msg4806#msg4806
After reviewing it if you watch on the left shoulder of the entity you will see a silver reflection and a red flash of light coming from this. My estimation of what this is goes like this:

1) This is footage from a documentary of a river float trip, camping, etc.
2) As you look at this footage I have slowed it down and found the following:
    a) The entity is wearing a sniper camo-suit.
    b) silver can be seen at the left side of the entity in question.
    c) at the end of this clip you can see the red led light shining.

Conclusion:

This entity in question in all likelihood is a camera man in camouflage and was accidently caught in frame while filming, the editors of the film probably missed him while cutting this film together or we are looking at a hunter with laser scope going.