1. Tyrrhenian Sea, Sardegna--Italy, Golfo di Congianus and Passo delle Bisce Yale Public content 1992. 2011-12-06T20:19:08Z. 2015-10-21T15:07:19Z. Istituto idrografico della Marina. The Center ; USGS Branch of Distribution, Box 25286, distributor. English. Public. Tyrrhenian Sea, Cugnana Gulf (Italy), Italy, and Sardinia.