Surfing with a paddle is great for building upper-body strength, increasing aquatic maneuverability, and disciplining profanity-spewing pelicans. Regulate aqueous agitators with today's Groupon: for $22, you get a semiprivate paddleboard lesson including equipment with Blueline Paddle Surf in Jupiter (a $45 value).

Stand-up paddleboarding bestows thrill-seeking sunbathers with a surfboard and single-bladed oar to navigate calm, glassy currents and slice through frothy spumes of rough-and-tumble saltwater. The semiprivate lesson submerges you and no more than four other students in a professional instructor's aquatic classroom, where you'll saddle up on a paddleboard to learn proper paddleboard positions, techniques, tubular hand gestures, water safety, and etiquette practices, such as never trumpeting the theme music from Jaws in your classmate's ear. Lessons conclude with an hour of open-water free play, and are open to riders of all skill levels, ages 9 and up.