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 $20, you get to participate in a Discover Scuba class (a $40 value) at the Aquatic Center of Rochester in Henrietta. Founded in 1987, the Aquatic Center of Rochester is a well-established, full-service dive shop and training facility that boasts a 15-feet deep, heated indoor pool where expert instructors host scuba-diving lessons. During a Discover Scuba course, introductory divers learn the basics of using scuba equipment and explore the depths of the Aquatic Center's natatorium, where they experience the weightless sensation of undersea inhalation––similar to moonwalking on all of Jupiter's 63 moons. Classes are typically offered on Wednesday evenings and last about an hour. As all scuba equipment is provided, participants only need to bring their bathing suits and towels.