Corsica · France · Reef
Le Grand Bleu
Depths from 10 to 40 m in clear water off Ajaccio
Area photo: Myrabella · CC BY-SA 3.0
A site near Ajaccio, listed by Voyage-Plongée as the Sec du Grand Bleu among the gulf's dive spots, with depths from 10 to 40 m and catalogued for its clear water and marine life at an intermediate-to-advanced level. The range means the same spot can give a dive planned around the 10 m shallows or a full deep profile, which is why it is not on the list for a first sea dive.
Also known as Sec du Grand Bleu.
Where it is and how deep
41.9062° N, 8.7219° EPublished position for this site.
The dive
The published depth range is the thing to plan around: the site starts at 10 m and runs to 40 m, and the catalogue lists it for intermediate to advanced divers rather than for everyone. That points to a dive where the deeper section is part of the attraction, so decide before you go in whether the plan is a 40 m profile with deep training and a conservative turn time, or a shallower tour that stays comfortably inside a no-decompression limit.
The catalogue entry credits the site with clear water and rich marine life but names no species, and neither it nor the Voyage-Plongée listing describes a route, so the honest expectation is a site near Ajaccio where the visibility does the work. Descend to your planned depth, spend the bottom time at the deeper end first and work upward, and finish the safety stop on the shallow section near 10 m. Anything more specific should come from the Porticcio centre's briefing on the day.
Marine life and season
The sources we used don't single out particular species here.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Off-season | Off-season | Off-season | Fair | Good | Prime | Prime | Prime | Prime | Good | Fair | Off-season |
Season follows Corsica: West-coast centres run roughly April to November; the sea is above 20 °C from June to October and averages under 14 °C in February.
Questions divers ask
How deep is Le Grand Bleu?+
The catalogue gives a range from 10 to 40 m, so the dive can be planned as a mid-depth tour or a full 40 m profile for divers with deep training.
Sources
- Le Grand Bleu - Scubago dive site catalogue — Scubago
- Plongée à Ajaccio — Voyage-Plongée
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Similar dives elsewhere
Uninhabited islet on the park's authorised diving list
Imposing grouper circle the rocks down to 35 m
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White gorgonian at 35–40 m, dived on technical setups