Before man conquered his fear of water, he amused himself with dust sports such as gravel boarding, rolling down hills, kicking boulders, and falling in the dust. Dust off fun with today's Groupon: for $25, you get a three-hour whitewater funyaking trip (up to a $44 value) with Crab Apple Whitewater. Trips launch daily at 1:45 p.m. in Charlemont, located about 2.5 hours west of Boston.

A funyak is a stable, user-friendly inflatable kayak (for one or two people) that's self-bailing, which means you won't need a bucket or sucky-trunked pachyderm to stay afloat. Each 8-mile funyak trip includes a paddling and safety lesson before funyakers fluffily float down the tree-draped Deerfield River. Drift among adorable eddies while listening to squirrels play forest windchimes, then brace for hectic bobbing on small rapids. In between white-capped splash zones, the trip breaks for snacks, swims, and super-sized soakings with provided squirt guns.

The friendly staff at Crab Apple Whitewater encourage adventurers to make the most of their aquatic expedition. When the rapids subside, slip out for a dip in the warm waters, and when the serene sections grow alarmingly peaceful, liven them up with nature's whitewater rapids, hand-powered splashing. The staff snap some action shots to display during the post-trip slideshow, so be sure to say cheese and flex frequently throughout the adventure. A calendar of scheduled trips can be found here.