On the 30-minute helicopter commute from the northern Australian city of Townsville to Pelorus Private Island, sharp-eyed pilot Will Owens points to sharks and turtles in the coral-mottled seas below.

In order to snorkel the Great Barrier Reef, you only have to step off the sandy, coral beach. Arrival is only by helicopter or private yacht. And once there, you’re the only residents on this 988 acre ...

“It will be, unquestionably, the best in Australia,” says Morris, whose portfolio also includes nearby Orpheus Island. “The unparalleled levels of privacy and personalized service will attract a ...