Sydney Harbour Chapter

The harbour is an inlet of the Tasman Sea (part of the South Pacific Ocean). Sydney Harbour is of huge environmental, economic and recreational importance and immense social and cultural significance, particularly for First Nation peoples. It was first discovered because it has one of the largest estuaries in the world and supports a rich diversity of marine life. Sydney Harbour extends 19 kilometres from the entrance, between North and South Heads, to the most westerly point where the Lane Cove and Parramatta rivers, however, 90% of its shoreline is urbanised, and 50% is bounded by seawalls and other built structures.