|Kamay/Gamay, Sting Ray Harbour|
|Location||Greater Metropolitan Sydney|
|Primary inflows||Georges River, Cooks River|
|Primary outflows||Tasman Sea|
|Catchment area||54.9 km2 (21.2 sq mi)|
|Max. length||10 km (6.2 mi)|
|Surface area||39.6 km2 (15.3 sq mi)|
|Average depth||11.4 m (37 ft)|
|Water volume||440,815.8 km3 (105,757.3 cu mi)|
|Website||NSW Environment & Heritage webpage|
Botany Bay, an open oceanic embayment, is located in Sydney, New South Wales, Australia, 13 km (8 mi) south of the Sydney central business district. Its source is the confluence of the Georges River at Taren Point and the Cooks River at Kyeemagh, which flows 10 km (6 mi) to the east before meeting its mouth at the Tasman Sea, midpoint between the suburbs of La Perouse and Kurnell. The northern headland of the entrance to the bay from the Tasman Sea is Cape Banks and, on the southern side, the outer headland is Cape Solander and the inner headland is Sutherland Point.
The total catchment area of the bay is approximately 55 km2 (21 sq mi). Despite its relative shallowness, the bay now serves as greater metropolitan Sydney's main cargo seaport, located at Port Botany, with facilities managed by Sydney Ports Corporation. Two runways of Sydney Airport extend into the bay, as do some port facilities. Botany Bay National Park is located on the northern and southern headlands of the bay. The area surrounding the bay is generally managed by Roads and Maritime Services.
The land adjacent to Botany Bay was settled for many thousands of years by the Tharawal and Eora peoples and their associated clans. On 29 April 1770, Botany Bay was the site of James Cook's first landing of HMS Endeavour on the land mass of Australia, after his extensive navigation of New Zealand. Later the British planned Botany Bay as the site for a penal colony. Out of these plans came the first European habitation of Australia at Sydney Cove. Although the penal settlement was almost immediately shifted to Sydney Cove, for some time in Britain transportation to "Botany Bay" was a metonym for transportation to any of the Australian penal settlements.
Archaeological evidence from the shores of Botany Bay has yielded evidence of an Aboriginal settlement dating back 5,000 years. The Aboriginal people of Sydney were known as the Eora, with sub-groups derived from the languages they spoke. The people living between the Cooks River and the Georges River were the Bidjigal clan; on the southern shores of the bay were the Gweagal clan, while on the northern shore it was the Kameygal clan.
Lieutenant James Cook first landed at Kurnell, on the southern banks of Botany Bay, in what is now Silver Beach, on Sunday 29 April 1770, when navigating his way up the east coast of Australia on his ship, HMS Endeavour. Cook's landing marked the beginning of Britain's interest in Australia and in the eventual colonisation of this new "southern continent". Initially the name Stingrays Harbour was used by Cook and other journal keepers on his expedition, for the stingrays they caught. That name was also recorded on an Admiralty chart. Cook's log for 6 May 1770 records "The great quantity of these sort of fish found in this place occasioned my giving it the name of Stingrays Harbour". However, in the journal prepared later from his log, Cook wrote instead: (sic) "The great quantity of plants Mr. Banks and Dr. Solander found in this place occasioned my giving it the name of
Botanist Botany Bay".[note 1]
Eighteen years later, in 1788, Governor Arthur Phillip sailed the armed tender HMS Supply into the bay on 18 January. First contact was made with the local Indigenous people, the Eora, who seemed curious but suspicious of the newcomers. Two days later the remaining ships of the First Fleet arrived to found the planned penal colony. However, the land was quickly ruled unsuitable for settlement as there was insufficient fresh water; Phillip also believed the swampy foreshores would render any colony unhealthy as the bay was open and unprotected, the water too shallow to allow the ships to anchor close to the shore, and the soil was poor.
The area was studded with enormously strong trees. When the convicts tried to cut them down, their tools broke and the tree trunks had to be blasted out of the ground with gunpowder. The primitive huts built for the officers and officials quickly collapsed in rainstorms. Crucially, Phillip worried that his fledgling colony was exposed to attack from Aborigines or foreign powers. Although his initial instructions were to establish the colony at Botany Bay, he was authorised to establish the colony elsewhere if necessary. As such, Phillip decided instead to move to the excellent natural harbour of Port Jackson to the north.
On the morning of 24 January the French exploratory expedition of Jean-François de Galaup, comte de Lapérouse was seen outside Botany Bay. On 26 January, the Supply left the bay to move up to Port Jackson and anchor in Sydney Cove. On the afternoon of 26 January, the remaining ships of First Fleet arrived at Sydney Cove. In 1789, Captain John Hunter surveyed Botany Bay after returning from the Cape of Good Hope, trading for grain. The good supply of fresh water in the area led to the expansion of its population in the 19th century.
The western shore of Botany Bay remained in its virgin state for almost fifty years after the initial settlement of Sydney Town. Land access to the area was difficult until a route from the west was established via Canterbury. As this route developed it became known as Illawarra Road, which is still one of the main access routes to the south-eastern suburbs of Sydney. The land nearer to this crossing of Cooks River was cleared and settled quite early in the infancy of the new colony.
Sydney Airport, Australia's busiest airport, sits on the northwestern side of Botany Bay. Some of its runways go out into the bay. After World War II the mouth of the Cooks River was moved two kilometres west to make way for the airport extension. Land was reclaimed from the bay to extend its first north-south runway and to build a second, parallel, runway.
The first container terminal at Port Botany, east of the airport, was completed during the 1970s and is the largest container terminal in Sydney. A second container terminal was completed during the 1980s and bulk liquid storage facilities are located on the northern and southern edge of the bay. A third container terminal was completed in 2011.
The land around the headlands of the bay is protected by the National Parks and Wildlife Service as Kamay Botany Bay National Park. On the northern side of the mouth of the bay is the historic site of La Perouse, and to the south is Kurnell. Despite its relative isolation, the southern shore of the bay is dominated by an unusual mixture of pristine national park and heavy industrial use that includes Kurnell Desalination Plant, the Caltex Fuel Terminal, sewer treatment, and historical sand mining facilities. On the southern side of the bay a section of water has been fenced off under the authority of the National Parks and Wildlife Service at Towra Point for environmental conservation purposes.
The western shores of the bay feature many popular swimming beaches including Lady Robinsons Beach and are highly urbanised.
There are also a lot of bunkers around Botany Bay. The bunkers were built by the military during WWII and still remain. 
Botany Bay has a diverse marine population, and the area around its entrance is a popular area for scuba diving. In recent times,[when?] the Botany Bay Watch Project has begun with volunteers assisting to monitor and protect the Bay Catchment and its unique marine life.
The world's largest population of weedy sea dragon ever surveyed is found at the 'Steps' dive site, on the Kurnell side of the Botany Bay National Park. Weedy sea dragons are just one of hundreds of territorial marine creatures found within Botany Bay. The eastern blue groper is the state fish of New South Wales; it is very tame and is commonly found following divers along the shoreline of Botany Bay.
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Botany Bay, view from Kurnell
Black-eyed Sue and Sweet Poll of Plymouth, England, mourning their lovers who are soon to be transported to Botany Bay, 1792
Bicentennial Monument at Brighton-Le-Sands
Sydney Airport runway near Botany Bay beach