Take note of the ocean in the beginning.
Then look at it at 0:17 into the video
after the UFO enters the water.
It looks like there might be a wave/swell ripple from the UFO's entry moving toward the boat.
A few seconds later the camera goes wild, looking down. Is that the moment that the wave hits the boat causing the camera man to lose balance?
I'm only asking because if there
was a wave caused by the UFO it adds validity to the authenticity of the video.