In the bay, completely submerged by the waters, are the remains of the commercial ports of Baiae (Lacus Baianus) and the Portus Julius.Parco Sommerso di Baia https://www.parcosommersobaia.beniculturali.it/en/introduzione Further west was the port of Cape Misenum, the base of the Roman imperial fleet. Mosaics, traces of frescoes, sculptures, road layouts and columns are also well-preserved about 5 m below sea level.Scognamiglio, E. Aggiornamenti sulla topografia di Baia sommersa. Archeologia Subacquea. Studi, Ricerche e Documenti II, 2nd ed.; Ist. Poligrafico dello Stato: Rome, Italy, 1997; pp. 35–46.
