Day four : a nice portrait of the greenhouse gas hole. Sink this boat and the world pollution problem is over... but you won't be able to dive anymore...

Oooh I see : let's keep that pollution problem alive, okay?

This is the kind of boat that will drift you nicely to your dive site. The good thing is that after a one hour ride, you cannot feel the liquid coming out of your ears and when the engine stops after two hours, you don't even notice it.