While scuba fins increase the aquatic speed of divers, they significantly decrease the land speed divers need when chased ashore by nimble-flippered guard-dogfish. Learn the ways of aquatic exploration with today’s Groupon: for $25, you get one two-hour Intro to Scuba Diving class at Deep Six Divers Service, Inc. (a $50 value).

The certified, knowledgeable staff members at Deep Six Divers use their adroit diving know-how to help aspiring Cousteaus familiarize themselves with the world of scuba. The two-hour class kicks off with a detailed overview of fundamental diving principles, such as learning to ask for directions in seahorse, and an in-depth gear summary ensures aqualung adeptness. With the basics of self-contained underwater breathing mastered, students hone their newfound subaqueous skills in the balmy waters of the heated pool. Deep Six Divers provides class participants with all essential diving equipment, enabling fledgling flounders to leave their masks, wetsuits, and portable coral reefs at home. Call ahead to reserve your spot, and peruse the online schedule for class dates.