Wright Island is a small granite island of about one hectare between the Bluff and Granite Island, named after William Wright, a headman of the Encounter Bay whaling operations in the 1800s. It is managed by the City of Victor Harbor, has a small sandy beach suitable for landing small boats, and is a popular summer fishing and swimming spot. It once had a little penguin colony of several hundred birds, but a 2013 survey found no active burrows.

Underwater, the Marine Life Network describes a large, low rocky reef around the island in 5-6 m, with a maze of eroded undercuts and holes hidden in the weed. These shelter good marine life, and divers who poke into the undercuts can expect crabs, crayfish, blue devils, wrasse, magpie perch and leatherjackets. The surrounding weed and seagrass is habitat for seadragons, as at nearby Black's Reef and the Bluff.

At only 5-6 m, the site is suited to long, relaxed dives, snorkelling and newer divers, and it is sheltered enough to be diveable on some days when more exposed sites are not. The main hazard is people: recreational fishers use the island heavily, so watch for lines and boats, and fly a dive flag. Wright Island combines well with Black's Reef on a short boat outing from the Bluff ramp, or can be the destination for a strong swimmer's shore dive on a very calm day.

On summer weekends the island's beach can be busy with small boats, so a mid-week visit or an early start gives a quieter dive.

Launch a small boat at the Bluff boat ramp, Encounter Bay, and run a few minutes to Wright Island; small boats can land on the island's sandy beach. Anchor in sand off the reef. Sources also list shore access, which means a long swim from the Encounter Bay shore past Black's Reef – only for strong swimmers on calm days with a surface marker.

Encounter Bay faces south into the Southern Ocean swell that wraps around Kangaroo Island and Cape Jervis, so Victor Harbor sites are the reverse of the gulf coast: they need northerly (offshore) winds. The best days follow several days of northerlies with low southerly swell, when visibility improves and the swell is blown back; any southerly or south-westerly swell over about 1 m, or strong southerly winds, makes most sites undiveable and stirs up particles. Summer and autumn bring the most northerly days, but good windows also occur in winter ahead of cold fronts.

Tidal currents strengthen around the headlands and islands during large tidal movements. Southern right whales visit Encounter Bay from about June to October – keep legal approach distances. Water is a little cooler than in the gulf.

The island itself provides some shelter from wind, which is why it is popular with fishers.

Anchor on the sheltered side, then work slowly around the island's reef at 4-6 m, looking into undercuts and holes in the weed. Keep the island on one shoulder and return to the anchor.

No regular operator; private boats from the Bluff ramp.