At first I was like "oh, a great and a creative shot. Wonder how he managed to be under the water with the camera.." And then noticed that it's a drawing... wait, WHAT? That's some serious skill you've got there, amazing work! Very detailed and awesome use of light and shadow! Congrats on a clearly deserved DD!
I put this into my "photography" collection, because at first that's what I thought I was looking at. The way you captured this with pencils was impressive enough when I first thought it was a snapshot. I am in awe that it's a drawing.