Similar to tickling a bear without losing an arm, the art of breathing underwater requires years of practice and dedication. Introduce your lungs to aqueous awareness with today’s Groupon: for $10, you get one Discover Scuba Diving intro class (a $25 value) at The Great American Diving Company. This deal is valid for the St. Charles and Kirkwood locations.

Learn the basics of breathing underwater in this Discover Scuba Diving intro course, where you'll suit up in a stylish underwater tuxedo and follow the instructional sonar echoes of the company's PADI-certified mermen and merwomen. A custom-built indoor pool is kept at a Caribbean-like 85 degrees and features anchor points on its bottom and sides for beginners to use as ascent lines. The skilled instructors will acquaint you with the aquatic dos and don'ts essential for mortal survival below sea level, including the most effective pressure points for taking down the shark pirates who lurk around sunken ships. Grab a Groupon and view the website's calendar to see which session best fits your schedule, then call to reserve your spot. Your lesson includes all the necessary rental equipment, though you should be sure to bring a swimsuit and towel.

A waiver and medical questionnaire must be signed by all participants. Divers under 18 must have a parent or legal guardian sign. Paperwork will be emailed or faxed to you when you make your reservation.