Henry's Bommie is the easy dive of Fairey Reef, one of the outer reefs near Bait and Hardy. 100 Magic Miles describes a relatively flat, sandy bottom studded with small coral outcrops, with the bommie rising from 12–15 m to near the surface, and a cave holding a giant clam about a metre across. Current is minimal, visibility 10–20 m. The bommie is well covered in coral and surrounded by abundant tropical fish, and the guide rates its snorkelling as excellent – the top reaches close to the surface, so snorkellers can enjoy the coral without diving.

A resident turtle is spotted at night, making it a good night dive for vessels anchored nearby. Because it is sheltered and shallow, Henry's Bommie is a comfortable site for beginners, snorkellers and relaxed second or night dives. The sand around the bommie adds macro interest – gobies, shrimps and rays – and the giant clam is the showpiece.

Fairey Reef is not visited by scheduled day trips; access is by liveaboards and private charters from Airlie Beach working the outer reefs. The reef's other sites – Little Fairey Inlet, The Shoals and Tina's Arm – offer walls, lagoons and current-fed diving, so Henry's Bommie complements them as the easy option. Coordinates here are approximate, and current coral condition has not been documented.

For liveaboard groups it works well as the last dive of the day followed by a night dive on the same bommie, when the turtle and nocturnal invertebrates appear and the sheltered water makes navigation straightforward.

Boat only. Fairey Reef lies on the outer Great Barrier Reef near Bait and Hardy reefs – roughly 1.5–2 hours by fast dive boat from Airlie Beach (Coral Sea Marina/Port of Airlie) or from Hamilton Island marina. Explore Group runs Great Barrier Reef scuba day trips to Bait Reef from both Airlie Beach and Hamilton Island; Whitsunday Dive Adventures also lists Bait Reef, and overnight/liveaboard vessels from Airlie include it.

Parking at Airlie is available near the marinas. Private vessels must use public moorings (Bait Reef is a green zone with no-anchoring areas) and need a settled forecast for the open-water crossing.

Fairey Reef and its neighbours are outer-shelf reefs fully exposed to the south-east trades (15–25 knots April–September). The large Reefworld catamarans run in most weather, but the crossing is rough in strong winds and diving can be restricted; smaller charter boats need a settled forecast. Hardy Reef's lagoon drains through a deep channel (about 60 m) beside the pontoon, and strong tidal currents run along the reef edges and through the gaps between Hardy, Line, Sinker and Fairey reefs, especially on spring tides and at the bottom of the tide – plan edge and wall dives for slack water.

Visibility is typically 8–20 m, up to 30 m on the outer faces. Marine stinger season (box jellyfish and Irukandji) runs roughly November to May – wear a full-length stinger suit or wetsuit with hood and gloves, carry vinegar. Cyclone season November–April; tropical lows and cyclones can close sites and damage coral (TC Yasi 2011, TC Debbie 2017).

Henry's Bommie has minimal current.

Descend to the sand at 12–15 m, circle the bommie, find the cave with the giant clam, then rise slowly up the bommie to its top near the surface. Night dives: look for the resident turtle.

No regular day-trip operator; visited on liveaboard/overnight dive trips from Airlie Beach and private charters. Cruise Whitsundays' Reefworld is nearby on Hardy Reef.