Independent dive-travel guide with weather and current notes for the Riou area.
Rocky Riou wall dive with gorgonians and clear water.
Rocky Riou wall dive with gorgonians and clear water.
Moyadons is a boat dive off Riou between Marseille and Cassis, centered on a rocky sec that drops away into a steep wall. The site is known for vivid gorgonian-covered relief, clear-water windows, and a Mediterranean mix of fish and invertebrates. It is best treated as a weather-dependent exploration dive rather than a casual shore stop, with conditions shaped by mistral, wind, and boat access from the Marseille side.
Depth range, seasonality, and planning context.
Reported Depth
0m - 30m
Depth Note
The site is described as a rocky sec with a drop-off from the surface to around 30 m.
Best Season
Year-round; calm, low-wind windows are the safest choice.
Typical Conditions
Rocky sec, steep wall, and clear Mediterranean water; mistral and wind can make conditions rough.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Plan around mistral and sea state, and keep depth discipline along the wall.
Access Restrictions
Boat access only; weather windows matter.
Legal Notes
Marseille and Calanques access rules may apply; confirm before departure.
Community notes to help plan your visit.
Scuba Diving
A rocky sec with a wall and gorgonian cover, best for boat dives on calm days.
Freediving
Not a freedive-first site; the wall and depth suit scuba better.
Snorkeling
Not a casual snorkel site; the main draw is the wall dive.
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
Independent dive-travel guide with weather and current notes for the Riou area.
Official Marseille tourism page covering the Riou archipelago and boat departures from Marseille launch points.
French dive-club page with depth, wind protection, clear water, and gorgonian coverage notes for the site.
Directory entry describing Moyadons as a beginner-to-intermediate site from the surface to 30 m with common marine life.
French dive guide describing Moyadons as a rocky sec with a drop-off to 40 m.
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