On the Sunshine Coast, just off Mooloolaba, the HMAS and REEF (Double dive) pairs the ex-HMAS Brisbane wreck with nearby Mooloolaba reef gardens for a full-morning boat diving experience. This two-dive outing delivers a contrast few dive destinations manage: the industrial angles of a decommissioned navy destroyer transformed into a living reef, followed by vibrant coral fields punctuated by swim-throughs and macro life. The ex-HMAS Brisbane sits roughly 30 minutes by boat from shore and has become one of Australia's premier artificial reefs. Its steel superstructure now supports dense growths of hard and soft corals, encrusting sponges and colorful anemones. Schools of reef fish weave through the decks and bow, while eagle rays and turtles are regular passersby. On the second dive, the Mooloolaba reef gardens reveal a different scale of texture: bommies and coral pavements creating ledges, channels and microhabitats where nudibranchs, octopus, cuttlefish and the occasional wobbegong rest during daylight. This trip is designed for certified divers seeking variety in a single outing. Service elements matter: easy check-in on the day, email and SMS confirmation the day prior, 50+ free car parks, toilets and showers onsite, plenty of space to rig gear, and a short walk from the dive shop to the boat. Dive masters on the trip are experienced and guide both the wreck exploration and reef drift, keeping navigation and safety tight during surface intervals. Why book this excursion when visiting the Sunshine Coast? The double-dive format condenses two signature local experiences into one accessible window of time. For photographers, the wreck offers dramatic lines and scale; for macro hunters, the reef gardens are a liveboard of small wonders. The proximity to Mooloolaba makes it a convenient add-on to beach days, and the consistent local marine life makes encounters likely rather than rare. Plan for changing conditions: wind and swell determine which reefs are visited, and operators adjust routes for comfort and safety. The trip suits open water-certified divers comfortable with boat entries and basic drift procedures. It’s an efficient, high-value way to sample the region’s top underwater attractions - steel architecture reclaimed by coral, and reef gardens humming with life - without needing multiple days of travel. Book this as a morning adventure to return to Mooloolaba in the afternoon with a wetsuit that smells of salt and a camera full of close-up and wide-angle shots. Bring a reef-safe sunscreen, a surface-marker buoy if you prefer visibility for the surface interval, and a good-quality wide-angle lens for the wreck plus a macro set-up for the reef. Operators handle tanks and weights but expect to rig your own kit; follow briefings, watch air consumption during the wreck penetration-free zones, and communicate with your dive master to maximize sightings and safety.