Glad you told us -- if you didn't I was going to ask.
I took a picture of a crab under the water (similar angle and depth) and ended up just not using it...
too many distortions Chromatic aberrations and a washed out look
Yes I can see you have tried to put some oomph into it but it still looks
like it's under water.
to combat that problem, the only thing I can imagine fixing it would be to have some stuff out of the water as well giving us an indication that it IS an underwater shot without guessing or asking.