Past these points on the island, it's a hike around rocky cliffs and through jungle paths to more secluded beaches, including Shark Point to the south and the beautifully isolated Turtle Beach to the north.

BBC: The perfect trip: Singapore and Malaysia

Shark and Clark Islands, located off the harbourside suburb of Darling Point and Rose Bay respectively, became dedicated recreational areas as early as the 1870s and are now great places to watch the boat traffic in Sydney Harbour.

BBC: The islands of Sydney Harbour

Some shark species make "mental maps" of their home ranges, allowing them to pin-point destinations up to 50km (30 miles) away, research suggests.

BBC: Sharks navigate using 'mental maps'