Some history on the bay

History
Matthew Flinders and George Bass explored and mapped the coastline and Port Hacking estuary in 1796 and the southernmost point of Cronulla is named Bass and Flinders Point, in their honour. Thomas Holt (1811-88) owned most of the land that stretched from Sutherland to Cronulla in the 1860s.
The area around the bay was subdivided in 1895 and land was offered for sale at 10 pounds per acre. In 1899, the government named the area Gunnamatta, which means sandy hills. On the 26th February 1908 it was officially changed to Cronulla and Gunnamatta was used for the name of the bay, on the western side.
Cronulla is derived from kurranulla, meaning ‘‘place of the pink seashells’’ in the dialect of the area's Aboriginal inhabitants, the Dharawal people. The beaches were named by Surveyor Robert Dixon who surveyed here in 1827-28 and by 1840, the main beach was still known as Karranulla.History
Matthew Flinders and George Bass explored and mapped the coastline and Port Hacking estuary in 1796 and the southernmost point of Cronulla is named Bass and Flinders Point, in their honour. Thomas Holt (1811-88) owned most of the land that stretched from Sutherland to Cronulla in the 1860s.
The area around the bay was subdivided in 1895 and land was offered for sale at 10 pounds per acre. In 1899, the government named the area Gunnamatta, which means sandy hills. On the 26th February 1908 it was officially changed to Cronulla and Gunnamatta was used for the name of the bay, on the western side.
Cronulla is derived from kurranulla, meaning ‘‘place of the pink seashells’’ in the dialect of the area's Aboriginal inhabitants, the Dharawal people. The beaches were named by Surveyor Robert Dixon who surveyed here in 1827-28 and by 1840, the main beach was still known as Karranulla.

http://en.wikipedia.org/wiki/Gunnamatta_Bay#History