South Solitary Island: Manta Arch – New South Wales – Coffs Harbour Dive Site

Site Overview

South Solitary Island: Manta Arch is a intermediate-level dive site in the New South Wales – Coffs Harbour region of Australia, reached by a 27-minute boat ride from the nearest departure point. The site features a reef system spanning depths from 3 to 28 meters with an average depth of 17 meters, offering an immersive underwater experience that showcases the very best of Australian diving. Renowned for its outstanding biodiversity, South Solitary Island: Manta Arch attracts divers seeking encounters with Grey Nurse Shark, Banded Sea Krait, Crested Bullhead Shark and other remarkable marine species throughout the year. The moderate currents create a dynamic environment supporting rich pelagic and reef-dwelling organisms, while the varied depth profile provides distinct habitat zones from shallow sunlit platforms to deeper twilight areas where different communities thrive. The coral formations feature hard and soft corals creating a kaleidoscope of color and texture across every surface, with massive bommies rising from sandy channels. Visibility typically ranges between 10 and 25 meters with clearest conditions during June, July, August, when nutrient-rich waters attract large schools of pelagic fish. Several local dive operators offer regular trips throughout the season, with departures available most days of the week. Water temperatures range from 17 to 25 degrees Celsius depending on season, making appropriate thermal protection essential for comfort. South Solitary Island: Manta Arch consistently ranks among the top dive sites in the New South Wales – Coffs Harbour region, drawing repeat visitors who return to observe seasonal changes in marine life activity and coral spawning events.