Here we have an excellent in-game photo, showing the seafloor-texture aswell as the transparent water:
And if you notice...Hey, look! Its Bernard Dummkopf's cousin Ensign Parker! It looks like he is dumping the submarines garbage on the seafloor, so that the enemy wont find it floating around.... He is a clever sailor, Ensign Parker! He even brought two members of the crew to help him with....well, it looks like some kind of leftover meat or something.... Well, im sure Parker has it all under control!
