I recommend the catamaran trip to Napali coast,this is the one we took. A great day! This is the only tour that has permits to take you onshore at Napali to explore the archeological ruins. Snorkled with sea turtles and dolphins -- we also saw whales breeching in May. A lot less expensive than the helicopter trips, plus it's a whole day. <br><br>Dont miss Ke'e and Tunnels Beach on the North Shore for snorkeling.<br><br>