That's a cool looking Shark, a great white by the looks of it, very imposing and fierce looking. I really like how it turned out, and I really like how the distortion of the water at the surface turned out, it's very impressive how you copied it in black and white. The other fish looks ind of simplistic however.
Omg this is so epic I had to come on and comment on it. The shark detail is amazing. Looking at the shark it's like it knows what's waiting above, prey wise. Also I like the little fish next to it just minding their own business, glad by the thought they're not gonna be eaten up. Well done fab work.