Lewis and Clark were both hobbled during their great expedition—Clark from resentment at his second billing and Lewis from a lego slipped into his hiking boot by Clark. Enjoy noncompetitive nature excursions with today's Groupon: for $20, you get a four-hour rental of a kayak or standup paddleboard at Belle Harbour Marina in Tarpon Springs (a $40 value). Renters can call ahead to reserve their rentals from either 8:30 a.m. to 12:30 p.m. or 1 p.m. to 5 p.m.

From their bustling docks, staffers at Belle Harbour Marina launch visitors onto calm harbor waters aboard top-notch rental boats. Kayakers can paddle up to the Anclote River to test biceps and battle upstream currents before lazing back to the marina while waves lap the bottom of the vessels. After finding their sea legs on the peaceful waters near the marina, standup paddleboarders cruise around the bayou, scoping for manatees, dolphins, or parasailing mermaids. Knowledgeable staffers direct visitors to nearby sandbars, where guests can de-boat in the shallow waters to sun themselves or go for a swim. Provided life jackets keep paddlers safe in the event of wipeouts, large waves, or a global flood.