The Mediterranean volume 4 covers the following areas:
- the coast of Spain from Gibraltar to Cap Cerbère,
- Islas Baleares,
- North Coast of Africa from Ceuta to Ra’s Ajdir,
- Isola di Pantelleria and Isole Pelagie,
- Maltese Islands,
- Isole Ègadi,
- Sicilia and Isole Eolie,
- coast of Italy from Capo Suvero to Capo Santa Maria di Leuca.