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Scuba Diving in Milne Bay
The eastern tip of mainland Papua New Guinea and its scatter of islands, widely called the birthplace of muck diving, where black-sand slopes off Alotau shelter rare critters and the bay holds coral bommies and WWII wrecks from the 1942 Battle of Milne Bay.
Why here
Milne Bay is where muck diving was named, and it remains one of the best places anywhere to hunt for the small and the strange. Off the black-sand slopes near Alotau and among the islands you find rhinopias, mimic and blue-ringed octopus, mandarinfish, ghost pipefish and every kind of nudibranch, the payoff for slow, close-in searching rather than big blue-water scenery. The province is not only muck: coral bommies rise in clear water, reef walls drop into current, and the bay carries wrecks and relics from the Battle of Milne Bay in 1942, the first land defeat of the Japanese in the Pacific. Access is almost entirely by boat from Alotau, either day trips to nearer sites or a liveaboard working the northern and southern reaches, which is how divers reach the remote critter grounds and reefs that rarely see another boat.
Best months
Milne Bay has two broad windows, roughly March to May and October to December, either side of the strongest winds; the muck sites are sheltered and diveable in most conditions, while the outer reefs depend on wind and current. Water is warm all year. Many sites are shallow black-sand slopes ideal for unhurried macro work, and some reef passes carry current that suits more experienced divers. Good buoyancy matters on the silty muck sites to keep the visibility.
Getting there & around
Fly from Port Moresby to Gurney Airport near Alotau, the provincial capital, then transfer to a shore resort or board a liveaboard. Milne Bay diving is boat-based; the resort is reached only by boat from Alotau and runs fast boats to its sites, while the liveaboard sails multi-day loops to reach the outer islands and critter grounds. Distances are large, so plan around the boat schedule rather than diving independently.
Skill levels: beginner, intermediate, advanced
Schools & guides (2)
MV Chertan
OutfitterMV Chertan is a twenty-metre liveaboard based in Alotau and owned and skippered by Rob van der Loos, a pioneer of Milne Bay diving who has explored and named sites across the province for more than thirty-five years. Built in 1994 and refitted in 2014, she carries up to ten divers in five cabins on itineraries covering the northern and southern reaches of the bay, with unlimited diving on muck slopes, reefs and wrecks and time set aside for village visits.
Tawali Resort
OutfitterTawali Leisure and Dive Resort sits on a limestone bluff above Hoia Bay in Milne Bay Province, reached only by boat from Alotau. Its PADI dive centre works more than twenty sites by fast boat, from coral gardens and reef walls to the macro-rich muck slopes and historic wrecks that made Milne Bay famous. The resort was built to open this remote corner of Papua New Guinea to divers and pairs its diving with a house reef, twenty-one handcrafted bungalows and visits to nearby villages.