North Clackamas Aquatic Park's 400,000 gallons of 86-degree H2O stream down two twisty tube slides and splash swimmers in three swimming pools housed within this waterlogged indoor playground. During Big Surf! recreational hours, divers plunge into 13-foot-deep water as swimmers on rental tubes crest the wave pool's 4-foot surf, whereas competitive swimmers hone skills in the 25-yard, six-lane lap pool. A drop slide sends adventurous aquanauts plunging, as climbers head the other direction on a 29-foot rock wall with three routes for scalers of all skill levels. As adults unwind in the hot tub, pint-size splashers flit about interactive fountains, coast down the Sammie the Seal slide into a kiddie pool, or organize their fellow tots into a filibuster until chaperones acquiesce to snack demands at the Waves Cafe. Swimming lessons, complimentary life jackets, and inflatable submarines are also available to help guests swim safely.