Loca is a Corsican boat dive on a dramatic rocky point, with tunnels, vaults, and cave-like passages that give it a striking underwater shape. The point rises close to the surface, so the topography matters as much as the depth. Clear water and rich structure make it a good fit for divers who want scenery and reef life over open sand, and it is best planned as a guided boat day with careful buoyancy and a calm-weather window.