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Dive Spot Guide•
Sec d’Alon
Sec d’Alon is Saint-Cyr's multi-level rocky seamount for shore divers.
Sec d’Alon is a free-access shore dive from Port d’Alon, with a cave section and current windows that suit confident divers more than casual snorkellers.
About Sec d’Alon
Sec d’Alon is Saint-Cyr-sur-Mer's best-known rocky seamount, a free-access shore site where a shallow crown drops into fractured rock, deeper slopes, and a small cave on the south side. The relief is what makes it worth the trip: the site concentrates fish life and gives divers a clear multi-level route without turning into a wreck or wall dive. It is better suited to confident divers who can handle current windows, boat lanes near the point, and a site that changes character quickly with conditions.
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Research Estimate At Sec d’Alon
Conservative baseline from public research. No community dives logged yet.
AccessModerate entry effort
Aquatic LifeGreat variety
FacilitiesBasic facilities
Crowd / PopularityModerate
CurrentStrong current
Where Is Sec d’Alon?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Sec d’Alon Planning Details
Depth range, seasonality, and planning context.
Reported Depth
1m - 37m
Depth Note
The reef crest starts just below the surface and drops to about 37m, with a small cave on the south side around 17m.
Best Season
May to October, with year-round access when conditions are suitable.
Typical Conditions
Open-water seamount conditions with strong current windows, a deep profile, and a small cave on the southern side.
Safety & Access At Sec d’Alon
Site conditions, restrictions, and access requirements.
Site Conditions
Boat trafficOverhead environmentStrong current
Safety Notes
Plan around current windows, watch boat traffic at Pointe du Pseudophaque, and treat the south-side cave as an overhead feature.
Access Restrictions
Free public access from the Port d’Alon side; shore access is the normal route, but the point is boat-active.
Local Intel For Sec d’Alon
Community notes to help plan your visit.
Scuba Diving
Best as a multi-level scuba dive that works from the shallow crest down into the deeper fractures and cave-adjacent zones.
Freediving
The structure can suit very controlled freedive sessions on calm days, but the depth and current make it a serious site rather than a casual breath-hold swim.
Snorkeling
The shallow crest can be swum on very calm days, but Sec d’Alon is not a casual snorkel site.
Wildlife at Sec d’Alon
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Sec d’Alon
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Sec d’Alon
Average conditions based on logged dives & visits.
No community dive data has been logged here yet. Be the first to record a dive and seed the averages.
