Kipu Falls Zipline Safari: $178 per person plus tax for adults, $138 plus tax for kids 14 years old and under.
Outfitters Kauai Zipline Trek: $138 per person plus tax for adults; $118 per child plus tax for kids seven to 14 years old (guide gratuity not included)
Wailua Waterfall Kayak: $98 per person plus tax for adults; $78 plus tax for kids 5 -14 years old. (Guide gratuity not included)
Hidden Valley Falls Kayak Adventure: AM Tour: Adults $98, Children $78 plus tax. Picnic Tour: Adults $110, Children $88 plus tax. (Guide gratuity not included)
Waimea Canyon Bicycle Downhill: $98 per person for adults; $78 per child, ages 12-14 years
Na Pali Coast Sea Kayak: $208 per person, plus 5% State Parks fee, plus tax (Guide gratuity not included)
Poipu Whale Watch Sea Kayak: $148 for adults; $118 for children 12-14 years old (Guide gratuity not included)
You can rent kayaks and paddle upstream for an up-close view of the Alakoko Pond. Outfitters rents bicycles, too, and offers a huge variety of guided tours on both modes of transport. Most popular are the Waimea downhill ride, Kokee mountain-bike trip—in which guides explain the native plants, special geographic features, and local legends—and a bicycling/snorkeling tour. In addition to normal adult- and child-size bikes, they also rent trailers that hook up to a bike to accommodate a small child. See the entry on The Kipu Falls Zipline Trek for this new unique adventure.