This dive site, Flat Rock - Shark Alley, is a prominent offshore reef system located further out to sea from the Queensland coast of Australia. It is famously known as a seasonal aggregation zone for the critically endangered Grey Nurse (sand tiger) sharks. The site is characterized by an 'alley' or channel, with the reef rising to 12 meters on either side, while the deeper parts of the alley reach its maximum depth of 23 meters. There is no specific history or story behind the dive site beyond its natural formation and recognition as a significant shark habitat.
Divers can expect to encounter a diverse array of marine life at Shark Alley. The star attractions are the Grey Nurse sharks, often seen alongside wobbegong sharks. Other large pelagic species include eagle rays, cownose rays, and, seasonally, humpback whales. The reef also supports schools of groupers and barracuda, and for those with a keen eye for smaller creatures, nudibranchs can be found.
The best time to visit Flat Rock - Shark Alley is during the Grey Nurse shark aggregation season, which typically occurs during cooler months. Whale season (May-November) offers the added bonus of seeing humpback whales. Given the site's deeper profile and exposure to open ocean conditions, it is recommended for advanced divers. The primary attractions, especially the Grey Nurse sharks, are often found in the deeper 'alley' making it more suited for scuba diving than snorkeling or freediving.
