In its present form the Mare Piccolo provides a well-sheltered anchorage, 36 ft.
This island separates the Gulf of Taranto from the deep inlet of the Mare Piccolo, and is sheltered by two other flat islands, San Pietro and San Paolo; the latter is occupied by a lighthouse.
The chief industry is the cultivation of oysters in four large beds in the Mare Piccolo; besides oysters, Taranto carries on a large trade in cozze, a species of large black mussel, which is packed in barrels with a special sauce.
The arsenal extends for a mile and a half along the southern coast of the Mare Piccolo, which constitutes its chief basin.
The group has numerous other lofty peaks, of which the chief are the Pizzo d Intermesole (8680 ft.), the Corno Piccolo (8650 ft.), the Pizzo Cefalone (8307 ft.) and the Monte della Portella (7835 ft.).