Wearing the proper aquatic gear helps swimmers move more efficiently through water, making it easier to out-swim sharks or speedboats driven by sharks. Out-stroke the competition with today's Groupon: for $25, you get $50 worth of swimwear and accessories at AquaSport.

AquaSport enhances swim fashion and performance with swimwear, sportswear, and accessories from renowned brands such as Seafolly, O'Neill, Rip Curl, Tyr, and Speedo. Men can infuse beach days with a bit of aquatic class by wearing the black-and-blue men's polyester jammer swimsuit ($30), and female athletes and naked buoys alike can improve water-treading records by wearing the women's Durafast Maxback swimsuit ($49). The Stohlquist kids' wetsuit ($29.99) weaves together yellow and black Lycra fibres, warming arms and legs during extralong swims. Not to be outdone in comfort, women's pool sandals ($25) give toes the freedom they've been petitioning for. Meanwhile, a set of two foam dumbbells ($29.95) helps tone upper bodies along with ergonomic Speedo kickboards ($22), which enhance splash skills.