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 rafting trips from Whitewater Connection. Choose between the following options:

• For $83, you get a full-day (9 a.m–3:30 p.m.) rafting trip on the Kaweah River (up to a $167.50 value).
• For $73, you get a full-day (9 a.m.–4:30 p.m.) rafting trip on the South Fork American River (up to a $147.50 value).

The Kaweah River option expires June 15, but Groupon holders who don't redeem it in time may instead use their Groupon for the South Fork American River trip at no extra charge.

Whitewater Connection's aqueous guides ferry paddlers along the eddying currents of California's most popular rivers during their whitewater-rafting tours. Challenge the Class IV+ Kaweah River to a physically demanding duel of wills, endurance, and skill. This excitable river wags its whitewater tails at the sight of rafters as it shimmies past the ancient Herculean trees and sentient totem poles of Sequoia National Park. Get carried away on Kaweah's currents, dipping and dropping westward past Three Rivers and rapids known as "Suicide Falls" and "Twist Shout" before meeting the river's calmness and paddling over the slick chutes of colossal granite slides.

The Class III South Fork American River grants less experienced rafters a relaxing opportunity to learn new techniques, brush up on their skills, or reconnect with now-distant oars. Coursing out of the Sierras, rafters meet the river's mild side then its wild side as it alternates between long glassy stretches and rougher rapids. After playing in the river's inviting foam, rafters kick back at Whitewater Connection's 40-acre camp for rounds of volleyball and horseshoes, the angling excitement of fishing, or a question-and-answer session with one of the river's native salmon. Restrooms, picnic areas, showers, and changing rooms are also available at the camp.

Both tours include all necessary gear, including lifejackets and helmets, along with a fine lunch of meats, cheeses, fruits, and cookies.