Summon your courage and plunge into the waters off Kailua-Kona to swim with manta rays. During this 2-hour tour during sunset or after dark, slip on the provided wet suit and snorkel gear and follow your expert instructor into the water. Watch as the enormous vegetarian animals, some with wingspans of 20 feet (6 meters), swim in graceful loops around you, taking in clouds of plankton for their evening meal. All gear and light snacks and refreshments are provided. Choose between sunset and evening snorkel tours; manta ray sightings are guaranteed or you can do a second outing for free.