In the area below Capo Testa, divers can admire very beautiful granite sea-beds and a unique marine fauna.
At Monte Regalo or at Secca del Diavolo, the strong currents of Bocche di Bonifacio and the very cold water foster the growth of beautiful red coral reefs. These coral reefs can be reached by divers using tanks.
The colonies of red and yellow Gorgonie and the black Coral colour this underwater landscape which is home to large Lobsters.
From Santa Teresa, it is easy to reach the Sandbank of Lavezzi in the middle of Bocche di Bonifacio.
If you want to learn or improve your knowledge of unassisted diving techniques, you can do so at the University of Apnoea in Santa Teresa di Gallura, which is run by the pluri-world champion Umberto Pellizzari.