The human body, unlike raisins, white wine, and the wit of Oscar Wilde, isn't meant to be dry. Embrace hydration with today's Groupon: for $29, you get a full-day same-day single-kayak or standup-paddleboard rental at Hawaiian WaterSports (a $59 value). This Groupon is valid at both the Honolulu and Kailua locations.

Hawaiian WaterSports rents high-quality kayaks and standup paddleboards for a wide range of body types and skill levels. With single-kayak rental, paddlers pilot vessels through the waters of the Mokulua and Flat Islands, keeping a lookout for sea turtles. A complimentary backrest supports proper paddling, and a dry bag keeps devoted housecats safe from salty waters. Life vests and seats are also included. Wave wranglers can traverse Kailua Bay or the Kapahulu shores with their feet planted firmly on standup paddleboards made by Focus, NSP, Surftech, and others. Boards range from 7 to 14 feet and can be swapped at will throughout the day, giving customers the freedom to find the ideal match for their stride, skill, or astrological sign.

Though it’s not included with this Groupon, nautical neophytes can learn from certified teachers and lifeguards on site. Oahu's only IKO-certified kiteboarding instructors are also on hand to assist customers, bridging the gap between Ben Franklin and Captain Nemo impersonators.