If foam noodles can be found floating on the surface of almost every pool, think how many perfectly salted meatballs must be at the bottom of the ocean. Discover the sea's sunken treats with today's Groupon: for $17, you get a Discover Scuba class at Blue Dolphin Dive Center. These classes are typically held in local YMCAs; call Blue Dolphin to arrange your exact time and location.

Whether you're curious about the marine justice league or wish to erect an underwater general store before the impending kelp rush, an introductory scuba class is an easy and effective way to decide whether submarine life is right for you. In the three-hour Discover Scuba course, one of Blue Dolphin Dive Center's friendly and highly experienced instructors will outfit amphibious-aspirants with all necessary subsurface survival equipment. They'll then carefully dish on the basics of the dive, including safety precautions and basic breathing procedures, and soon after, students will be cast out into the water to explore the aqueous depths on their own, slowly gaining an appreciation for the joys of submerged living and the challenges of underwater archery. Though you won't be certified to scuba dive after one class, the course is a great chance to get acquainted with the equipment and get a feel for a flippered existence.

Participants must be at least 12 years of age, and all divers must sign a medical release and waiver. Divers under the age of 18 must have a parent or guardian present.