Microwaves underwater?
that's Soooooo bogus.
microwaves don't penetrate water.
notice how red doesn't penetrate to a very great depth?
microwaves are much LONGER than red...it doesn't penetrate at all.
in fact microwaves HEAT water (I nuke cold coffee daily)
that video is bogus.
a classic example of appeal to authority.
except that he ain't one.