Red sky at night is a sailor’s delight, but red sky at morning means the ship's been steered inside a volcano. Discover further aquaformation with today’s Groupon: for $22, you get a half-day rafting excursion at Huck Finn Rafting Adventures in Hot Springs, North Carolina (up to a $48 value).

At Huck Finn Rafting Adventures, new and experienced rafters tame the tides of the French Broad River while soaking up the mountain scenery of Pisgah National Forest. Seasoned guides lead explorers on a five-mile float, navigating class II, III, and III+ rapids. Seafarers stop along the two- to three-hour trek to swim, look for mermaids, and snack on crackers, cookies, fresh fruit, and drinks provided by the staff. Adventurers not content to stop at the 5-mile mark may upgrade to a 9-mile jaunt that features two class IV rapids ($12/person).

Though Huck Finn Rafting Adventures sometimes features a discounted price online, this Groupon still offers the best deal available.