KanDoo! Island, a floating playground 200 yards off Waikiki, has officially launched. The "island," a steel catamaran that includes a water slide, water trampoline, sun deck, four bars and food service among its attractions, offers more than 20 ocean activities, from ultimate parasailing (1,000 feet high) to underwater helmet diving — without getting your hair wet — to swimming and snorkeling. Or visitors can simply zone out on the sun deck.

The 148-foot-by-48-foot vessel is moored in about 50 feet of water roughly opposite the Sheraton Waikiki.
KanDoo! Island operates 9 a.m. to 9 p.m. daily with food and beverages served all day. After sunset, KanDoo! becomes a romantic evening getaway spot/night-club. Shuttle boats depart Kewalo Basin every 20 minutes. A four-hour admission to the island is $20 for adults, $10 children, plus cost of activities. Kama'äina now get four hours free admission and 25 percent off activities. www.gokandoo.com.

NATIONAL GEOGRAPHIC SPECIAL

TAKE A LOOK AT THE PACIFIC WITH ALL OF ITS WATER DRAINED AWAY

What if we could pull a plug and drain the planet's water? Draining the Pacific, for example, would reveal a mountain 4,000 feet higher than Everest — in our own backyard. The Big Island's Mauna Loa seen above the ocean is dwarfed by the rest of the mountain's massive cliffs. On its eastern flank, the new island and undersea volcano Lo'ihi is growing 3,000 feet beneath the surface.
Using the latest scientific data and digital mapping, the National Geographic team removes the oceans to reveal an amazing landscape featuring the deepest canyons and biggest mountains on the planet. Follow Nat Geo on a virtual expedition into the deep to explore one of earth’s last great frontiers. The program airs today; check local listings for times. Repeats Tuesday, Aug. 16 and Aug. 18. Watch a preview at http://channel.nationalgeographic.com/episode/drain-the-ocean-3639.

BETHEL, N.Y.

DIDN'T ATTEND WOODSTOCK IN '69? TRIP OUT AT THE MUSEUM INSTEAD

Forty years ago this weekend, the Woodstock Music and Art Fair defined a generation.
For three days in August 1969, an estimated 500,000 fans celebrated love, peace and music along with flowers, nudity and body hair.
If you couldn’t make the “Heroes of Woodstock” 40th reunion festival in Bethel, N.Y., this weekend, visit the impressive Woodstock Museum at Bethel Woods sometime at your leisure.
The 2,000-acre, $100 million complex tells the story of Woodstock and the folks who made it happen, alongside some of the most momentous events of the 1960s.
Beads and velvet bell-bottoms are optional.
866-781-2922, www.bethelwoodscenter.org/museum. Closed Mondays and from January to mid-March. $13.

— Chris Oliver