The term valli da pesca (sing. valle), or just valli/valle, translates into "fishing valleys." It refers to fish farms. Although in Italian valle means valley, the term originates from the Latin word vallum, which means rampant. This term came into use centuries ago because the valli are separated from the rest of the lagoon by banks. They are located along the gronda lagunare in the southern and northern parts of the lagoon. There are 33 valli which cover c. 92 km2 of the waters of the lagoon (1/6, 17% of the total surface).Istituto Veneto di Scienze, Lettere e Arti - Banca di Dati Ambientali della Laguna di Venezia
