Bougainville Reef

Flinders Reef

Herald Cays

Holmes Reef

Lihou Reef

Malay Reef

Marion Reef

Osprey Reef: Admiralty Anchor

Osprey Reef: False Entrance

Osprey Reef: Half Way Wall

Osprey Reef: North Horn

Osprey Reef: Silver City

Osprey Reef: West Wall

Dining on Coral Sea liveaboard expeditions is provided entirely by the vessel, with multi-day trips featuring excellent restaurant-quality cuisine prepared by on-board chefs. The extended duration of these expeditions means the food quality and variety are typically higher than shorter GBR trips, with fresh Australian seafood, quality meats, and international cuisine featuring prominently. Fresh supplies are loaded at departure, and meals are served in communal dining areas that become social hubs for the diving community on board. Quality Australian wines, craft beers, and fresh tropical fruits complement the meals throughout the expedition. Because these trips are often a week or longer, the chefs take great care to ensure a varied menu that keeps energy levels high for multiple dives per day. Morning starts often involve the aroma of fresh coffee and a cooked breakfast as the sun rises over the horizon, while evenings are a time for relaxation and fine dining as the vessel transits between reef systems. Dietary requirements are handled with professional care, ensuring all guests enjoy a premium culinary experience in the heart of the ocean.

Spirit of Freedom (Liveaboard)

Mike Ball Dive Expeditions

Pullman Cairns International

Pacific Hotel Cairns

The Coral Sea Territory encompasses a vast expanse of ocean east of the Great Barrier Reef, protecting a chain of remote atolls, submerged reefs, and seamounts that represent some of the most pristine and least-dived marine environments in Australian waters. The crown jewel is Osprey Reef, a massive submerged atoll approximately 200 kilometers east of Cairns that rises from 2,000-meter depths to create dramatic underwater walls, pinnacles, and coral gardens in crystal-clear oceanic waters. The North Horn site on Osprey Reef is world-renowned for its grey reef shark aggregation, where dozens of sharks patrol the reef edge in one of the most spectacular shark diving experiences on Earth. The broader Coral Sea Territory includes Bougainville Reef, Holmes Reef, Flinders Reef, Herald Cays, Lihou Reef, Marion Reef, and Malay Reef, each offering unique underwater topography and marine ecosystems that have been largely protected from fishing pressure by their extreme remoteness. These reefs support healthy populations of pelagic species including oceanic whitetip sharks, silky sharks, schooling hammerheads, and seasonal visits from oceanic manta rays and whale sharks. The Coral Sea Marine Park, established in 2012, protects this extraordinary biodiversity across over one million square kilometers of ocean, making it one of the world's largest marine protected areas. Access is exclusively via liveaboard vessels on extended expeditions from Cairns, typically lasting 7-14 days to cover the multiple reef systems. The extreme isolation means that diving conditions can be challenging with strong oceanic currents and deep water, making the Coral Sea most suitable for experienced divers seeking a genuine frontier diving experience. Beyond the charismatic megafauna, the reefs themselves are architectural marvels, with complex systems of caves and tunnels that have been carved into the ancient limestone by millennia of wave action and biological growth. The visibility in the open Coral Sea is legendary, often exceeding 40 meters, giving divers a truly three-dimensional perspective of the vertical reef walls as they drop away into the abyss. This is a region where the scale of the environment is as impressive as the marine life that inhabits it, providing a sense of scale and isolation that is rare in modern travel.

Coral Sea Territory

The Coral Sea Territory is accessed exclusively via liveaboard vessels departing from Cairns International Airport (CNS). The journey to Osprey Reef takes approximately 24-36 hours by boat, and extended expeditions covering multiple reef systems can last 7-14 days. The extreme distance and open-ocean crossing make this a genuine expedition diving experience, suitable for experienced divers comfortable with extended time at sea. Most operators schedule 1-2 Coral Sea expeditions per year, typically during the peak season from June to November when seas are calmest. There is no day-trip or resort access to the Coral Sea Territory.

Dive Sites in Coral Sea Territory