Triangle is a dive between three large rocks north of Bastia, spaced several metres apart across a field of posidonia, with depths running from 15 down to 35 m. It is rated for intermediate to advanced divers, and the route is a tour from rock to rock over the seagrass between them.
Where it is and how deep
42.7756° N, 9.4821° EApproximate position — the dashed circle shows where the site lies; your operator's briefing has the mooring.
The dive
The dive is a circuit: three large rocks stand several metres apart, and the route walks you from one to the next across the posidonia field that separates them. Depths run from 15 m to 35 m, so the usual plan takes the deepest rock early and finishes on the shallowest, letting the no-stop clock recover across the crossing legs.
The crossings are part of the dive — navigation between the rocks runs over seagrass with no wall to follow, so hold the bearing from the briefing and stay close to your buddy in the gaps. Rated for intermediate to advanced divers, it suits people comfortable running a multi-level profile across separate structures rather than circling one fixed rock.
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Fair | Fair | Fair | Fair | Good | Prime | Prime | Prime | Prime | Good | Fair | Fair |
Season follows Bastia & Cap Corse (East Coast): Centres run year round, but the sea tops 20 °C only from June to October; January–March sit at 14–15 °C.
Sources
- Scubago — Triangle — Scubago
More dive sites in Bastia & Cap Corse (East Coast)
Wreck
A WWII bomber, 'Yehunde', on the seabed at 63 m
Reef
A 2–12 m slope with a colourful drop-off at the surface
Pinnacle
A rocky peak off Bastia's harbour mouth, 22 m down to 44 m
Reef
Imposing grouper circle the rocks down to 35 m
Reef
Grouper, barracuda and fan mussels on rocks at 18–20 m
Reef
Rocks from 8 to 35 m with grouper, barracuda and fan mussels
A WWII fighter at 19 m, cockpit canopy still open
Wreck
A second WWII fighter at 30 m, ringed by thirty corb
Similar dives elsewhere
Uninhabited islet on the park's authorised diving list
Deep rock at 26–35 m rising to a garden at 8 m
White gorgonian at 35–40 m, dived on technical setups
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Two reefs: yellow gorgonians to 25 m, endemic sponges to 35 m