The graphics look great, nice job on that! I think the core concept here was cool and I think with some more polish this would be a great boss for some sort of scuba diving game. I do think the bosses second state of just swimming around randomly was a little boring. I think having the ability to shoot a harpoon or somehow move the bombs towards him during this state would have really added to the game play rather than just waiting for him to start chasing again.