My cousin has a pretty sweet salt water tank, anemone, clown fish, live coral, shrimp, crabs, pretty fish, urchins...its decked out. I recently saw on a facebook post by 'i fucking love science' that there is such thing as a pistol shrimp that uses his claw to shoot a high-speed high-pressure jet of water that results in a bubble cavitation behind it that collapses resulting in a 260 db snap and a flash due to the air being compressed to the point that it reaches over 5,000 celcius!!! http://www.youtube.com/watch?v=uQ7Ztmcf0Cc&feature=youtube_gdata_player