I think you should verify the visiabilty range in the water and depth that
you want to use this in.

This is going to be difficult to determine unless you try doing a test dive
with scuba gear.. Video gear isn't going to improve that.. What you might do
is contact a local dive shop and ask about visibility ranges in the area you
are interested in.

I most coastal water, rivers, lakes, etc. this range is going to be limited.
Perhaps so limited that you wouldn't see a fish unless he is with in a
couple feet of the camera. Not much use if your trolling along at 5 knots.


--
My opinion and experience. FWIW

Steve
s/v Good Intentions