Scuba diving is the only way left to find hidden treasure, befriend a nautical skeleton, or strap a huge tank to yourself. Explore the possibilities with today's Groupon: for $25, you get a Discover Scuba introductory class for two at Splash Water Sports (a $50 value).

The team of PADI-certified scuba instructors at Splash Water Sports runs the only instructor-development program in the Pittsburgh area to be rated five stars by the Professional Association of Diving Instructors. Discover Scuba classes take place in the shark-free waters of the Splash Water Sports’ indoor pool, inviting friends and parents with offspring as young as 8 to dip into a sport with a field that covers 70% of the world. An expert in human submersion whets flippers’ appetites for future excursions with approximately two hours of instruction in fundamentals such as breathing technique, swimming with an oxygen tank, and full choreography for songs from The Little Mermaid. The center provides all necessary gear, so pupils need only bring a swimsuit and towel. Classes convene on the first and third Saturday of each month, and must be scheduled two weeks in advance via phone or echolocation.