This was our favorite outing in Hawaii! 2 hours was the perfect amount of time to snorkel. We left on time, and got back on time. Itās about a 20 minute ride out to the reef, so we had about an hour 20 in the water. The turtles were out in full view, and loads of fish too. The crew was fantastic, and really patient with the non swimmers. They kept a keen eye on everyone. Scott was our captain, and he was fun and personable. I would do this every day!