Trigger Happy is one of three Flinders Reefs sites named on Mike Ball's Yongala & Coral Sea expedition itinerary, alongside Fan Fair and Cod Wall.

No description of the site itself was found. The name suggests triggerfish, and the Coral Sea is home to titan triggerfish, which nest on sand and rubble and defend their nests vigorously during the breeding season, and to clown, orange-lined and red-toothed triggerfish that crowd reef walls. Whether the name refers to a nesting area, a particular abundance of triggerfish or something else entirely is not known.

The general character of Flinders gives an idea of what to expect. Mike Ball describes vertical walls dropping more than 300 m, with 40 m-plus visibility, soft corals and massive sea fans, and sharks, tuna and barracuda. Cruising the Edge reports tiger and tawny nurse sharks and yellowfin and dogtooth tuna in the area.

This record is provisional. If titan triggerfish are nesting, divers should be aware that they defend a cone-shaped territory extending upward from the nest, and should swim away horizontally rather than upward if a fish charges. The crew briefing will cover the site's layout and depth. It suits intermediate divers, and the entry should be updated when an operator description becomes available.

Liveaboard only, from Townsville. Mike Ball's Spoilsport visits Flinders on its 7-night Yongala & Coral Sea expedition (depart Breakwater Marina, Townsville, Thursday evening, finish in Cairns) and the 10-night Coral Sea Odyssey; the overnight crossing is about 140 nautical miles (260 km), passing Myrmidon Reef on the outer Great Barrier Reef. Private expedition yachts anchor behind the main sand cay in about 30 m over sand.

Trigger Happy is listed among the Flinders sites on Mike Ball's Yongala & Coral Sea itinerary and is dived from a mooring or tender drop.

The Flinders Reefs lie about 250 km off the Queensland coast, roughly 140 nautical miles north-east of Townsville, beyond the outer Great Barrier Reef. The crossing is made overnight through open ocean and is uncomfortable in SE trades over about 20 knots (common June–August). The main sand cay gives some shelter from the trades, and the lagoon pinnacles are more protected than the outer walls.

Currents can be strong through the reef gaps and over the mid-reef bommies. September–December usually gives the calmest seas and 40 m-plus visibility; December–April is cyclone season.

No published dive plan. Follow the crew briefing; expect a wall or reef dive with a turn at half gas and a safety stop on the reef top.

Mike Ball Dive Expeditions (Spoilsport) – 7-night Yongala & Coral Sea (Townsville–Cairns) and 10-night Coral Sea Odyssey, a few departures a year; otherwise private expedition yachts only.