The Peron Islands lie off the mouth of Anson Bay, south-west of Dundee and about 30 km beyond Point Blaze. They are among the most remote marine areas in the western Top End that can still be reached on a multi-day trip from Darwin, and the Marine Life Network lists them for tropical bluewater species. Fishing liveaboards visit for reef fish and pelagics; scuba diving is incidental.

Detailed site descriptions have not been published. Divers should expect fringing reefs around the islands with the hard and soft coral communities typical of the turbid Timor Sea coast – massive and encrusting hard corals, leather corals, gorgonians and sponges – on rock and rubble, dropping to sand. Because the islands lie further from the big harbours and rivers than Darwin, visibility on good days is often better than inshore, although the Daly River discharges into Anson Bay nearby and the wet season brings heavy run-off.

Fish life is the main draw: coral trout, cod, snapper and sweetlips on the reef, with Spanish mackerel, queenfish, giant trevally and sharks around the island points. Turtles nest in the region and dugong are present.

The Peron Islands suit experienced, self-sufficient divers on an expedition-style trip who are comfortable with currents, variable visibility and diving far from medical help. The islands and surrounding waters are Aboriginal land and sea country; check current permit requirements with the Northern Land Council before landing. A typical expedition combines fishing, a few dives on the lee-side reefs at slack water and overnight anchorages, and divers should expect to plan their own dives with the skipper rather than follow an established site guide.

The Peron Islands are about 30 km beyond Point Blaze, south-west of Dundee. The Marine Life Network notes they are more easily reached via liveaboard cruises from Darwin, typically fishing-focused multi-day trips that can accommodate divers. Experienced private boaters can make the run from Dundee Beach in calm dry-season conditions, but it is a long open-water trip with no facilities – carry ample fuel, water and safety gear.

Anchorage is in the lee of the islands depending on wind.

The Dundee coast faces west into the Timor Sea. The dry season (May–October) is the diving season: the south-east trade wind blows offshore, mornings are calm and water clarity is at its best. Dive on neap tides at slack water – tidal ranges here are large, currents run hard around reefs and headlands on springs, and beach launching and retrieval at Dundee also depend on the tide.

Afternoon westerly sea breezes can chop up the sea. In the wet season (December–April) monsoon north-westerlies blow straight onshore, rivers flood with run-off, cyclones are possible and box jellyfish are present, so diving is rarely feasible.

Choose a reef edge in the lee of the islands at slack water, anchor or drift with a pickup boat, and follow the reef at 8–15 m. Use an SMB on every dive; the boat must follow divers.

No scheduled dive trips. Multi-day fishing liveaboards from Darwin occasionally visit and may carry divers by arrangement; otherwise private expedition boats only.