After a few days spent exploring the city of Cairns, start your onward journey by meeting the superyacht at Cairns Marlin Marina. Settle in and enjoy a leisurely lunch aboard while the crew gets the yacht underway to Opal Reef to the northeast, marking the first of many opportunities to see and experience the Great Barrier Reef (GBR). At 348,700sqkm, you could spend forever exploring the 2,900-plus individual reefs, 300 coral cays and 600 continental islands that make up the GBR, but Opal Reef is a great place to start. This large and shallow dive site has ample variety of sites and species to explore. Crescent-shaped, you’ll be largely protected from the prevailing wind on the inner side allowing you to spend the day exploring the changing ecosystems of the 12 or more dive sites that make up Opal, before enjoying a peaceful night’s rest at anchor with good food and great company. The Reef is best experienced during the summer months when the winds are low and the visibility is good, but comfortable water temperatures make it accessible all year around. It is the only place in the world where the spectacular coral spawning can be accurately predicted and witnessed. Visit at the right time of year and you’ll find this stunning show taking place; here in the outer reef, it occurs in November and December, while it’s slightly earlier in the inner reef during October.