Port Phillip (Kulin: Narm-Narm) or Port Phillip Bay is a horsehead-shaped enclosed bay on the central coast of southern Victoria, Australia. The bay opens into the Bass Strait via a short, narrow channel known as The Rip, and is completely surrounded by localities of Victorias two largest cities — metropolitan Greater Melbourne in the bay\’s main eastern portion north of the Mornington Peninsula, and the city of Greater Geelong in the much smaller western portion (known as the Corio Bay) north of the Bellarine Peninsula. Geographically, the bay covers 1,930 km2 and the shore stretches roughly 264 km, with the volume of water around 25 km3. Most of the bay is navigable, although it is extremely shallow for its size — the deepest portion is only 24 m and half the bay is shallower than 8 m. Its waters and coast are home to seals, whales, dolphins, corals and many kinds of seabirds and migratory waders.
