I had the pleasure of testing the new Panasonic still and video range. They have 3 new marine cases (120 ') to accommodate 5 of the new cameras. Overall I was very impressed with the results from the underwater shots. The "underwater" mode does bring up the colors very nicely. The cases are also a bit cheaper than the previous versions. Obviously this is of no relevance to the average backpacker, but it is to the rafters and divers that lurk around here.
This is one of the shots. Not the best by any means but one available to me.
( I don't swim, so I was on terra firma or the boat)
This one is from a TZ15