Shag Rock - Swim Through is a boat-accessed rocky reef with a connecting swim-
Shag Rock - Swim Through is a boat-accessed rocky reef with a connecting swim-
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Shag Rock - Swim Through is an exposed rocky reef reached by a short boat ride from the beach launch area. It is best known for its protected feel compared with nearby sites and for the swim-through that links both sides of the reef. The site suits divers who want a compact reef dive with a more adventurous overhead feature. Planning should still account for boat access, changing sea conditions, and the limits of the swim-through environment.
Depth range, seasonality, and planning context.
Reported Depth
13m - 14m
Depth Note
Published site summaries describe the reef as shallow to moderate in depth, with an average around this range and a reported maximum at the lower end of the teens.
Best Season
No spot-specific season is stated in the provided text; the site is mainly presented as a fallback when conditions are poorer elsewhere.
Typical Conditions
Often used when other nearby sites are affected by less favorable sea conditions. Reports also suggest relatively light current and visibility that may be lower than at some alternatives.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
The swim-through is an overhead feature, so good buoyancy control, spacing, and comfort in enclosed spaces are important. Visibility may be modest, so plan conservative turn pressure and entry/exit communication.
Community notes to help plan your visit.
Scuba Diving
Dives can be done on both sides of the reef, with the swim-through providing the main navigation feature. The site is presented as suitable for a range of experience levels, but the overhead section still calls for care.
Freediving
The reef is described as shallow enough for freediving in general site summaries, but the swim-through should only be attempted within personal comfort and breath-hold discipline.
Snorkeling
Snorkeling is described as feasible on the shallower reef sections, though the swim-through itself is more relevant to confident and controlled users than to casual surface-only visits.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Brisbane and Moreton Island (Mulgumpin) Diving Guide | DiveJourney | Brisbane is the easiest big-city gateway to the sand islands and reefs of Moreton Bay. A short ferry ride puts you on Moreton Island (Mulgumpin), where the famo | Brisbane and Moreton Island (Mulgumpin)
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