Browse Island is Western Australia's most remote island that is not an external territory — a 14 ha sand cay surrounded by extensive coral reefs about 180 km north-west of the Kimberley coast. It was mined for guano (phosphate) from 1870 to 1890, and divingwawrecks notes it became the resting place of several guano carriers, some still to be found; Wikipedia records nine historic shipwrecks near the island, one on the Register of the National Estate.

Upwelling brings concentrations of tropical krill; green turtles nest on the island and seabirds roost. Indonesian fishers visit under traditional agreements. Diving information is scarce; it is an expedition destination.

Kimberley diving context: the Kimberley coast between Broome and Wyndham is one of the least-dived coastlines in Australia. Huge tides (up to 10–11 m), turbid inshore water, saltwater crocodiles around the islands and rivers, and large sharks mean that inshore diving is generally discouraged by experienced local boaters, and expedition cruise ships mostly offer snorkelling or Zodiac excursions rather than scuba. The serious diving is offshore, on atolls and island reefs far from river run-off, visited on a handful of liveaboard departures a year from Broome or Darwin. Medical help is many hours away; divers should be conservative and carry DAN or equivalent evacuation cover.

Planning notes: Advanced Open Water certification is recommended and the site is rated advanced. Expect to spend most of the dive around 12 m, with a maximum of about 25 m. It can only be reached on a multi-day expedition or liveaboard, so it is usually one of several sites dived on the trip and choices are made by the crew on the day. Currents are significant, so timing around the tide is part of the plan. Best season: September–November (calmest window). Traffic: remote/expedition only.

Only by expedition vessel or private ocean-going boat, usually combined with Scott Reef on voyages from Broome (roughly 500+ km) or Darwin. A helipad serves the oil and gas industry; there are no visitor facilities. Expedition vessels typically depart Broome or Darwin (or Wyndham) on 10–14 night Kimberley voyages, or on dedicated 7–12 night reef expeditions; private vessels need full offshore capability, long-range communications (satphone/EPIRB) and fuel for several hundred nautical miles.

Dives are run from tenders launched from the mothership, which anchors in the lee of the reef.

Kimberley offshore trips run in the dry season (roughly April–October; Scott Reef and Rowley trips cluster September–November when winds ease). The wet season (November–April) brings cyclones, and the Kimberley coast has tides up to 10–11 m, creating violent currents, whirlpools and tidal races near the mainland and inshore reefs. Offshore atolls have smaller ranges but strong currents in channels.

Strong easterly trade winds in mid-dry season can make crossings rough.

Dive the fringing reef slope from a tender on slack water, 8–20 m.

No regular operator; occasional expedition liveaboards (e.g. Scott Reef itineraries) and private vessels.