Bellarine Peninsula in the context of "Queenscliff, Victoria"

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 Victoria's 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 km (750 sq mi) and the shore stretches roughly 264 km (164 mi), with the volume of water around 25 km (6.0 cu mi). Most of the bay is navigable, although it is extremely shallow for its size — the deepest portion is only 24 m (79 ft) and half the bay is shallower than 8 m (26 ft). Its waters and coast are home to seals, whales, dolphins, corals and many kinds of seabirds and migratory waders.

Before European settlement, the area around Port Phillip was divided between the territories of the Wathaurong (west), Wurundjeri (north) and Boonwurrung (south and east) people, all part of the indigeous Kulin nation. The first Europeans to enter the bay were the crews of HMS Lady Nelson, commanded by John Murray and, ten weeks later, HMS Investigator commanded by Matthew Flinders, in 1802. Subsequent expeditions into the bay took place in 1803 to establish the first settlement in Victoria, near Sorrento, but was abandoned in 1804. Thirty years later, settlers from Tasmania returned to establish Melbourne (now Victoria's capital city) at the mouth of the Yarra River in 1835, and Geelong at Corio Bay in 1838. Today, Port Phillip is the most densely populated catchment in Australia with an estimated 5.5 million people living around the bay; Melbourne's suburbs extend around much of the northern and eastern shorelines, and the city of Geelong sprawls around Corio Bay in the bay's western arm.

Geelong (/dʒɪˈlɒŋ/ jih-LONG; Wathawurrung: Djilang/Djalang) is a port city in Victoria, Australia, located at the eastern end of Corio Bay (the smaller western portion of Port Phillip Bay) and the left bank of Barwon River, about 75 km (47 mi) southwest of Melbourne. With an estimated population of 282,809 in 2023, Geelong is the second-largest city in the state of Victoria. It is the administrative centre for the City of Greater Geelong municipality, which is Port Phillip's only regional metropolitan area, and covers all the urban, rural and coastal reserves around the city including the entire Bellarine Peninsula and running from the plains of Lara in the north to the rolling hills of Waurn Ponds to the south, with Corio Bay to the east and the Barrabool Hills to the west.

The traditional owners of the land on which Geelong sits are the Wadawurrung (also known as Wathaurong) Aboriginal people of the Kulin nation. The modern name of Geelong, first recorded in 1827, was derived from the local Wadawurrung name for the region, Djilang, thought to mean "land", "cliffs" or "tongue of land or peninsula". The area was first surveyed by the European settlers in 1838, three weeks after Melbourne. During the 1850s Victorian gold rush, Geelong experienced a brief boom as the main port to the goldfields of central Victoria. The town then diversified into manufacturing, and during the 1860s became one of the largest manufacturing centres in Australia with its wool mills, ropeworks, and paper mills. During the city's early years, inhabitants of Geelong were often called Geelongites or Pivotonians, derived from the city's nickname of "The Pivot", referring to the city's role as a shipping and rail hub for Ballarat and the Western District.

The Rip is the narrow waterway entrance connecting the Bass Strait to the Port Phillip Bay in southern Victoria, Australia, and is the only route of maritime transport and thus seaport access into Melbourne and Geelong, Victoria's two largest cities and homes to Australia's largest and sixth-largest ports. Geographically, it is a roughly triangular area of water between Point Nepean on the Mornington Peninsula, Shortlands Bluff and Point Lonsdale on the Bellarine Peninsula, with these three headlands forming the Heads. Because of the strong oceanic tides being funnelled into the bay through this relatively narrow channel, and a high rocky seabed, the Rip is a dangerous stretch of water and has claimed numerous ships and many lives in history.

The Wadawurrung nation, also called the Wathaurong, or Wathaurung, are an Aboriginal Australian people living in the area near Melbourne, Geelong, and the Bellarine Peninsula in the state of Victoria. They are part of the Kulin alliance. The Wathaurong language was spoken by 25 clans south of the Werribee River and the Bellarine Peninsula to Streatham. The area they inhabit has been occupied for at least the last 25,000 years.

The Barwon River is a perennial river of the Corangamite catchment, located in The Otways and the Bellarine Peninsula regions of the Australian state of Victoria.

The Borough of Queenscliffe is a local government area in the Barwon South West region of Victoria, Australia, located in the southern part of the state. It is the smallest local government area in Victoria, covering an area of 10.83 square kilometres (4.18 mi) and, in June 2018, had a population of 2,982. It includes only two settlements, which are Queenscliff and Point Lonsdale. It is situated on the south coast, south-east of Geelong on the Bellarine Peninsula south of Swan Bay and next to the Port Phillip Heads, the entrance to Port Phillip Bay from Bass Strait.

The Borough is governed and administered by the Queenscliffe Borough Council; its seat of local government and administrative centre is located at the council headquarters in Queenscliff. The Borough is named after the main settlement located in the centre of the LGA, that is Queenscliff, which is also the LGA's most populous urban centre with a population of 1,315.