posted on Oct, 27 2016 @ 11:42 AM
don't really think it is any kind of debris, or anything man made or a hoax.
for the simple fact that if you look you can see some sort of appendage be it a fin or leg break and cause swirls in the water near what i would say
is the head a couple of times and you can just see it below the suface a couple of time when it does it.
plus the movement matches what you see other types of fish, or water creatures have.