Kimbe Bay

Kimbe · West New Britain Province · Papua New Guinea

Kimbe Bay is the crown jewel of Papua New Guinea's underwater realm and a strong contender for the title of the most biodiverse marine ecosystem on the planet. Stretching along the northern coast of New Britain Island in the Bismarck Sea, this expansive bay harbours approximately 60 percent of all coral species found in the entire Indo-Pacific region, an astonishing concentration of marine biodiversity that has earned it the unofficial title of the world's coral capital. Scientific surveys have catalogued over 400 coral species and approximately 900 species of reef fish within the bay, numbers that rival or exceed far larger marine regions. The diving revolves around a series of spectacular submarine seamounts and fringing reefs, each with its own character. Susan's Reef rises from the deep to within a few metres of the surface, its flanks covered in dense gardens of soft coral, gorgonian fans, and barrel sponges that erupt with colour under diving lights. Vanessa's Reef features a plateau at 20 metres that is carpeted with Kimbe Bay's signature tufts of red whip coral, creating a landscape found nowhere else. Inglis Shoal brings the adrenaline, with silvertip sharks making close passes during baited encounters that showcase these apex predators in their element. Kimbe Bay's importance extends beyond its coral. The bay serves as a nursery and migration corridor for cetaceans, with a dozen species of whale and dolphin recorded in its waters. Orca, pilot whales, and even whale sharks have been documented passing through, and manta rays are resident on certain seamounts. For macro enthusiasts, the reefs deliver pygmy seahorses, ghost pipefish, nudibranchs, and mantis shrimp in profusion. Water temperatures remain a warm 28-31 degrees Celsius year-round, currents are generally mild, and the bay is diveable in all seasons, though the calmest conditions prevail from May to November. The main base of operations is Walindi Plantation Resort, a dedicated dive lodge that has been operating for decades and helped pioneer the conservation of Kimbe Bay's reefs. Liveaboards also include the bay on broader Papua New Guinea itineraries. The combination of pristine coral health, staggering biodiversity, and uncrowded dive sites makes Kimbe Bay an essential destination for any serious diver.