Raja Ampat

Liveaboards do most of the work here. They move overnight, moor in a bay, and run three or four dives a day from tenders rather than from the boat you sleep on, with a night dive tacked on when the anchorage suits it. The schedule follows the tide table rather than mealtimes, and briefings tend to turn on which way the water will be moving half an hour in. Resorts and village homestays on Kri, Gam and Arborek work the same reefs from fast boats, trading the far corners of the archipelago for shorter days and a fixed bed.

Diving is usually split into three areas. The Dampier Strait funnels tidal flow between Waigeo and Batanta, so its ridges, seamounts and island passages take the strongest movement and the heaviest fish traffic. Misool, well to the south, is limestone karst with soft-coral walls, big sea fans and mangrove channels where roots and coral grow together, though its seamounts can run hard as well. The far north around Wayag is remote enough that only longer liveaboard itineraries reach it.

What people remember is less a single animal than holding position and watching a reef work. Reef hooks are standard kit on the exposed ridges: tuck in below the flow and let the schooling fish and patrolling sharks stream past. Against that, the village jetty dives are nearly static, with pilings crowded with fish and small critters in shallow water, and night dives can turn up walking sharks stalking the rubble on their fins. Wobbegongs lie flat under table corals through the day.

Nothing here is technically deep, but negative entries into moving water and quick regrouping on the reef are routine, and most operators expect you to carry and deploy your own surface marker. It is also a long way from help, so trips get booked months ahead and any problem means a boat ride before a flight. The calm, clear stretch runs from roughly October into April, with November through March rating highest; mid-year stays diveable but brings southeast wind, rougher crossings and thinner boat schedules.