Nice concept
Graphics aren't too bad, although I think background detail was lacking. It didn't look too "underwater-like", could have put in some coral, shells, fish, maybe a crab walking along the bottom. Maybe tint the layers blue to give a bit more depth, add a shipwreck, diver, or treasure chest or something like that to really bring the location to life. As for the submarine, it looked pretty cool, but the tweening looked a little weird and maybe it could have had bubbles coming out of the back to indicate forward thrust. Also, the submarine sank awfully fast for an object underwater. I think if you can capture the location, touch up on the movements and give the physics a bit more of a life like quality, then you'll have a very nice animation. But right now, it's quite enjoyable enough, the cartoon style is cool, and the cows were amusing. Good job.
Keep it up.
-Review Request Club-