Corner Shop is a moored wall dive on Bougainville Reef, described by marinelife.org.au as a wall at about 16 m with whitetip and blacktip reef sharks, Napoleon (Maori) wrasse, clown triggerfish, trevally, snapper and bannerfish. The name, a companion to nearby Walmart, suggests a reef corner stocked with a bit of everything.

The mooring gives straightforward access. Divers descend to the wall and follow it around the corner of the reef, where water movement concentrates fish. Sharks are the main attraction: whitetips rest on ledges and cruise along the face, and blacktips patrol the shallower edge. Maori wrasse, some very large, move along the wall and often approach divers. Clown triggerfish, with their bold spotted pattern, are common, and schools of trevally, snapper and bannerfish hang off the corner.

The wall itself is covered in hard and soft corals, sea fans and sponges, and drops away into deep water below the working depth of the dive. Visibility at Bougainville is typically 20–40 m, so the whole scene can be taken in at once. As with other Bougainville sites, currents are usually mild but can pick up on the corner.

It suits divers of intermediate experience and is a good moored alternative when drift conditions are unsuitable. It is not listed on current Mike Ball itinerary pages, so it is probably an occasional site. Its mooring and moderate depth make it one of the simpler dives on the reef.

Liveaboard only. Mike Ball's Spoilsport visits Bougainville on its 4-night Osprey fly-dive (Cairns departure Thursday evening, return by flight from Lizard Island), 5-night Coral Sea & Cod Hole and 7-night Coral Sea expeditions; the overnight run from Cairns is roughly 230 km of open ocean. Bougainville is not guaranteed on every itinerary and is usually allocated one day.

Corner Shop has a mooring; divers descend the line to the wall.

Bougainville is a small, isolated Coral Sea reef about 230 km north-east of Cairns and 150 km south of Osprey, with no land to shelter behind, so the surface can be choppy in any SE trade wind over about 20 knots, common June to August. Conditions broadly follow Osprey's, though Bougainville is sometimes calmer when Osprey is windy. Currents are generally mild but can pick up on the corners and walls.

September to December usually gives the calmest seas and best visibility (20–40 m); December to April is cyclone season.

Descend the mooring to about 16 m on the wall, follow it around the reef corner watching for sharks and Maori wrasse, turn at half gas and return along the upper wall to the mooring for a safety stop.

Coral Sea liveaboards visiting Bougainville (Mike Ball Dive Expeditions) – occasional.