The Inner Gneering Shoals are the heart of Sunshine Coast reef diving. The reef system lies about 3 km offshore from Mooloolaba – a 15-minute boat ride – and covers a large area of rocky reef in roughly 8-20 m. Rather than one dive, it is a collection of named sites, each with a character of its own: Hanging Rock, the Caves, the Pinnacles, Nurse Rock (formerly Wobby Rock) and Coral Gardens (also called Fairyland) are the best known, and Scuba World lists more, including Lost Canyons, Nudi Junction, Pyramids, Ship Rock, Tunnels and Wonderland.

Weekend Notes describes a reef of soft corals, black coral trees, white coral whips and dramatic outcrops and shelves, with hard and soft corals in 10-15 m and multiple gutters that can disorient divers. Scuba Diver Life summarises the Inner Gneering, Outer Gneering and Murphy's reefs as gutters, ledges, caves and pinnacles with coral gardens, in 8-33 m.

The Gneerings are especially known for nudibranchs; Scuba Diver Life and PADI both note that the Sunshine Coast reefs have among the highest nudibranch diversity in the region. Larger residents include rays, loggerhead and green turtles, moray eels, wobbegongs and leopard sharks (summer), while sapphire damsels and fairy basslets add colour. Grey nurse sharks gather at Nurse Rock in winter.

The reef suits every level, from students doing training dives on the shallower sites to experienced photographers working the ledges. Visibility averages around 12 m offshore, better after southerly winds.

Mooloolaba's dive boats leave from The Wharf on the Mooloolah River (Parkyn Parade, Mooloolaba), about 1.5 hours' drive north of Brisbane via the Bruce Highway and Sunshine Motorway. Scuba World's shop is about 40 m from its boat, with 100+ free all-day parking spaces nearby; Sunreef departs from the same precinct. Boats run down the calm river, cross the Mooloolah River mouth beside Point Cartwright and head north-east to the reefs – about 15 minutes to the Inner Gneerings and Mudjimba Island.

Private boats can launch at the Mooloolaba (Parkyn Parade/Lions Park) ramps. Operators choose between sites on the day according to swell and current.

The Mooloolaba reefs are open-ocean sites with no shelter from the south-east trade winds or easterly swell. Operators generally cancel when winds exceed about 20 knots or swell makes the river-mouth crossing and moorings unsafe; they confirm trips by email and text around 3.30 pm the day before. Northerly winds (common on summer afternoons) also make the reefs choppy, so morning trips are more reliable.

Visibility averages about 12 m offshore (range 3-30 m) and is clearest after southerly winds and in winter; it drops after easterly blows and heavy rain. Winter (June-October) brings 19-21°C water, grey nurse sharks and humpback whales; summer (November-May) brings 25-27°C water, leopard sharks and lower visibility.

Operators choose a named site according to conditions. Typically descend a mooring or anchor line to 10-15 m, follow a gutter or ledge line into the current, check under overhangs, turn on a third of your gas and return along a parallel gutter. The gutters look alike, so keep track of your heading.

Safety stop on the line.

Sunreef Mooloolaba – double reef dives most days, rotating between Mudjimba Island, Nurse Rock, Hanging Rock and Caves; Scuba World Mooloolaba – reef double dives rotating through the Gneering Shoals and Mudjimba sites; SubSurface Scuba – Sunshine Coast reef double dives.