The beauty of the sea depth and maybe also treasures of sank ships from one side and from another dangerous sea creatures. Of course, diving deeply, you must collect as many treasures as you can(boxes with precious stones, jugs with gold, big pearls). Doing this try not to collide with sharks and other sea creatures. Every treasure makes diver richer, but it makes more load for him too. Diver moves more slowly.Every collide with sea creature reduces his health. To come back on the surface of water you must have enough health and time. So, good luck!