The locality and suburb of Gymea Bay are located in southern Sydney, in the acknowledge of New South Wales, Australia. Gymea Bay is 27 kilometres (17 mi) south of the Sydney central thing district, in the local government Place of the Sutherland Shire. The postcode is 2227, which it shares taking into consideration the adjacent suburb of Gymea. The Gymea Bay locality takes its publicize from the adjoining Gymea Bay, a small bay on the north side of the Port Hacking estuary).
The locality included isolated the single peninsula amongst Gymea Bay and the North West Arm of the Port Hacking River, bounded by Coonong Creek upon the north and, on the west, by an shadowy creek flowing south of Gymea Bay Road in the middle of Barraran Street and Coonong Road. Gymea Bay became a locality within the suburb of Gymea. Early street directories accomplish the locality of Gymea Bay as ration of the suburb of Gymea. In 2008, the NSW Geographical Names Board suggested a much enlarged Place for a suburb of Gymea Bay, taking in much of former Gymea and even ration of the suburb of Miranda which are estranged from the locality of Gymea Bay and its agreement by a deep valley with no roads. This suggested suburb’s extremities are defined by Forest Road upon the northeast, Avenel Road on the north, Dents Creek upon the west, and the waters of North West Arm and the bay itself to the south. These suggested boundaries remain contentious as the proposal to the NSW Geographical Names Board was made without the required community consultation.
The locality was characterised by large amounts of verdant bushland. However, since the 1980s, increased subdivision subsequent to smaller lots, larger houses and increased motor vehicle ownership has decreased the number of large trees. Despite Tree Preservation Orders and Council Greenweb and Greenweb Support planning zones, much of the treescape has been lost. Since the 1990s, the invasions of feral deer from the Royal National Park have begun to negatively enactment shrub and ground lid and regrowth of trees.