Diving around Pulau Aur and Pulau Dayang is considered some of the best in Peninsular Malaysia, especially for those coming from Singapore. The two islands sit side by side in the Johor Marine Park, surrounded by deep, clear waters of the South China Sea. Because of their remote location — about 65 km off Mersing — the reefs here are healthy, colorful, and less disturbed than those near more developed islands like Tioman.
The underwater visibility is usually excellent, often ranging between 15 to 30 meters, and even more on calm, sunny days. The seas are typically clear blue, with rich coral formations and a mix of reef slopes, boulders, and drop-offs. The marine biodiversity is impressive: divers often encounter schools of fusiliers, trevallies, and barracudas, along with turtles, batfish, sweetlips, and angelfish. On deeper dives, you might spot white-tip reef sharks and occasionally even manta rays passing through.
The dive sites around Aur and Dayang cater to both intermediate and advanced divers, mainly because of the stronger currents that can appear around certain points. However, beginners can still enjoy the shallower, calmer reefs under the guidance of instructors. The conditions make for dynamic dives, with the chance to experience both gentle coral gardens and thrilling drift dives.
Some of the most popular dive sites include:
  - Rayner’s Rock – A famous site between Aur and Dayang known for large granite boulders, vibrant coral growth, and big schools of fish. Currents can be strong, but it’s one of the region’s highlights.
  
  - Telok Jawa – A gentler site great for beginners, with shallow coral gardens, hard corals, and plenty of reef fish.
  
  - The Pinnacles – A deeper site favored by experienced divers, featuring towering rock structures, sea fans, and pelagic fish.
  
  - Crocodile Rock and Captain Point – Known for varied terrain and opportunities to spot turtles, groupers, and barracudas.
  
Because of the depth, visibility, and occasional currents, dives here feel more adventurous and rewarding than at many closer-to-shore locations. The water temperature is warm year-round, usually between 27°C and 30°C, and the best time to dive is during the dry season (March to October), when the seas are calmest.
In short, diving at Pulau Aur and Pulau Dayang offers crystal-clear water, vibrant reefs, and thrilling drift dives — ideal for divers seeking pristine sites and marine life encounters away from crowded destinations.