Navy Pier's defining feature is the pier structure itself, where industrial pylons draped in sponges and soft corals form a productive artificial reef accessible from shore. Beyond the pier, boat dives reach reef walls, caves, and open reef across a range of depths. Nudibranchs dominate the species list, with Whitetip Reef Shark, Tasselled Wobbegong, and Emperor Angelfish regularly encountered. Most sites suit beginners, though the pier itself requires intermediate experience.
Monthly water temperature across Navy Pier's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water is warmest from late summer through autumn and cools noticeably through the winter months, though it remains comfortable year-round. Visibility at the pier site can be variable given its industrial setting, while the outer reef and wall sites tend to offer cleaner conditions. The data points to May, October and shoulder months as particularly favoured by visiting divers.
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Dampier, Australia
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Water temperature around Navy Pier ranges from about 23°C in July to 29°C in March, based on satellite sea-temperature data for its dive sites.
In the warm season (about 29°C) a rash guard or 3mm shorty is comfortable in Navy Pier; in the coldest months (about 23°C) step up to a 3mm full suit.
Fin maps 10 sites in Navy Pier (10 scuba diving sites and 2 snorkelling spots, with some suited to both).
Nudibranchs are the standout group, with species including Varicose Wart Slug, Starry Waffle Dorid, Desirable Flabellina, Lined Nembrotha, and several Chromodoris species observed regularly across the sites. Beyond nudibranchs, divers commonly encounter Emperor Angelfish, Semicircle Angelfish, Spotted Boxfish, Rock Cod, Whitetip Reef Shark, and Yellowbanded Pipefish. Tasselled Wobbegong, Green Sea Turtle, Hawksbill Sea Turtle, and Harlequin Shrimp appear occasionally.
The majority of sites in the Navy Pier area, including Blizzard Ridge, Bogo Marine Sanctuary, Gulliver's, and Helby Bank, are rated for beginner divers and are reached by boat. The Navy Pier site itself is rated intermediate, given the navigation required between the pier's concrete pylons. New divers have plenty of options here, and operators such as Exmouth Dive & Whalesharks Ningaloo and Dive Ningaloo can guide appropriate site selection.
The pier structure itself is classed as an artificial reef and muck dive, rewarding slow and observant diving between the sponge-covered pylons. Sponge Gardens adds wall, cave, and drift diving to a wide depth range, while sites such as Blizzard Ridge, Gulliver's, and Helby Bank offer shallower reef diving on natural structure. Most boat sites have a more open, classic reef character compared to the confined and detailed environment of the pier.
The Navy Pier site itself is a shore dive, making it one of the few sites in the area accessible without a boat. All other listed sites, including Sponge Gardens, Blizzard Ridge, Bogo Marine Sanctuary, Gulliver's, and Helby Bank, are boat access only. Several operators based in Exmouth, including Exmouth Diving Centre and Ningaloo Discovery, run guided trips to the area.
