Spend a day on the Great Barrier Reef at two different snorkel and dive sites on this luxury catamaran cruise from Cairns. Travel in style aboard a comfortable catamaran to a mooring off of Upolu Cay. Take a glass-bottom boat to Upolu Cay, then have time to snorkel or scuba dive. Refuel with a buffet lunch on board the catamaran before heading to your next destination, for more water time, including a guided snorkeling tour.