Somewhere far below sea level, the most fashionable critters in the sub-surface world are gracefully strutting their stuff in form-fitting wetsuits with foot-flattering flippers. Grace the coveted underwater runways of exploration with today's Groupon: for $25, you get a Discover Scuba class (a $50 value) at Scuba Network, located in the Flatiron District.

With Scuba Network's Discover Scuba class, aspiring sea-divers can get a quick taste of what it's like to don advanced scuba gear and navigate the water. 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. You'll flipper through Scuba Network's safe and controlled pool environment with a professional, helpful instructor. With the scuba sage dishing out useful, hands-on tutoring, you'll learn the basics of the underwater hobby and be on your way to diving several leagues under the sea. The deal also includes all gear except for a bathing suit and a towel, so there's no need to hastily overbid on Jacques Cousteau's original mermaid suit.