Adding to the region's reputation for world-class diving, this museum plunges into the history of man's thirst for undersea exploration. Among its 13 galleries of interactive and other interesting displays are a submarine and helmet re-created from the film 20,000 Leagues Under the Sea. Vintage U.S. Navy equipment, diving helmets from around the world, and early scuba gear explore 4,000 years of diving history. For the grand finale, spend $3 for a mouthpiece and sing your favorite tune at the helium bar. There are extended hours (until 7 pm) on the third Wednesday of every month.