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)
Reef
Rocks from 8 to 35 m with grouper, barracuda and fan mussels
Reef
Imposing grouper circle the rocks down to 35 m
Reef
Tunnels and faults at 26–38 m, home to grouper and corb
Pinnacle
A grouper family holds one rock at 35 m off Erbalunga
Reef
A 2–12 m slope with a colourful drop-off at the surface
Wreck
A second WWII fighter at 30 m, ringed by thirty corb
Wreck
A WWII bomber, 'Yehunde', on the seabed at 63 m
Reef
Grouper, barracuda and fan mussels on rocks at 18–20 m
Similar dives elsewhere
Coralligenous boulders and red gorgonians from 15 to 40 m
Reef
Punta Grabara
Stintino & the Asinara National Park · Italy
A seldom-visited jagged bottom crowded with spiny lobsters
Grouper and dentex inside France's largest no-take reserve
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Ridges to 40 m on the sheltered side of the islet