I really really liked this because of all the details in it. There is a little bit too much flipping in direction which makes it hard to control the submarine, maybe you could rethink that. But I can see the time spent into the detail of this game.

OK it's late already, so it's probably my fault that I don't know that to do here...
I'll try again later... :)

ha thanks for the feedback :)

Wow, there's a lot of content. Pretty polished too, with the menu and screens.
With a lot of Java games the graphics aren't very good, but these are nice.
It's a bit hard to get into because with the controls you need both hands. But very good.