Agincourt Reef: Castle Rock – Great Barrier Reef – Cairns & Port Douglas Dive Site

Site Overview

Agincourt Reef: Castle Rock is a intermediate-level dive site located in the Great Barrier Reef – Cairns & Port Douglas region of Australia, reached by a 80-minute boat ride from the nearest departure point. The site features a impressive pinnacle that spans depths from 5 to 30 meters with an average depth of 18 meters. Renowned for its outstanding biodiversity, Agincourt Reef: Castle Rock attracts divers from around the world seeking encounters with Grey Reef Shark, Barracuda, Eagle Ray and other remarkable marine species. The moderate currents that characterize this site create a dynamic environment that supports a rich diversity of pelagic and reef-dwelling organisms. The coral formations at this site are truly impressive, with hard and soft corals creating a kaleidoscope of color across every available surface. Visibility typically ranges between 10 and 25 meters, with the clearest conditions occurring during the June, July, August months. The site is serviced by several local dive operators who offer regular trips throughout the diving season. Water temperatures range from 18 to 26 degrees Celsius depending on the season, making it comfortable for diving year-round with appropriate exposure protection. Agincourt Reef: Castle Rock consistently ranks among the top dive sites in the Great Barrier Reef – Cairns & Port Douglas region, offering an unforgettable underwater experience for properly certified divers.