If this is for real, this is probably the only real image of a Grey or Grey aliens. I've yet to see anyone debunk this video. You can see lots of amateur hoax UFO vids on YouTube that look pretty good. But they're pretty easy to tell when they are phony. These sightings have taken place over the last few years since 2007. I had sometime ago, but can not find it now, video that gave the exact location of one of the night-time videos and where the craft appears. It is way above the water, illuminated by the moon.
Other UFO stories on this site . . .
Deep Space UFOs - Creatures & Ships
Alien Bases and UFO's on the Moon?