good effort mate.....if he/she was in Australia it would be looking behind it....as a Great White nails it LOL...sorry made just a joke. The Great Whites here in Western Australia seem to have changed diet to human.

Personally I would agree with dave, can you get the bubbles to follow a curve going behind the seal to give the illusion of movement? The rock might need a bit of work...some porous looking and yeh some kelp would set it off nicely...or some seagrass. Keep it up mate....

cheers bullet