Secca del Corallo is an Elba shoal off Capo Fonza in the Gulf of Lacona, with a very shallow top that drops into coral-covered slopes, tunnels, and a deep outer face. The site is boat-dived and works best as a multi-level outing, with the shallow crest for easier diving and the deeper sections for divers who want a longer profile. Expect red coral, sea fans, cracks, and a route that rewards careful buoyancy more than speed.