Captain Marvin's, established in Grand Cayman in 1951, is one of the original operators of snorkel trips to the Stingray City sandbar in the clear, warm waters of the famous North Sound. The company now offers short (2.5-hour), half-day, and full-day snorkel trips, all of which include a stop at Stingray City as well as additional stops at one or more other snorkel sites. The snorkel trip can also be combined with trips to Hell and/or the Turtle Farm.