Geographe Bay

Geographe Bay is an icon of the South West. Characterised by clean white sand and calm turquoise waters, the Bay has significant cultural, recreational and ecological values. Vital to our local and state economy, the Bay is also enjoyed by thousands of international and domestic visitors each year.

The Bay is one of only a few sheltered north-facing marine embayments in Western Australia. It faces north and is protected from strong sea breezes and swells by Cape Naturaliste. The coastline is, however, particularly vulnerable to the effects of climate change. The low lying shoreline is susceptible to erosion caused by storm surges, high tides and rising sea levels.

The southern half of Geographe Bay from north of Busselton all the way to Flinders Bay near Augusta is included in the Ngari Capes Marine Park. The Marine Park was established to manage human activity in the area to preserve environmental, social and cultural values.


Geographe Bay is dominated by the second largest seagrass meadow in Western Australia. Seagrass meadows play a vital role in stabilising sediments within the Bay and provide critical habitat for more than 70 species of fish and other marine life.

A major threat to the health of our seagrass meadows is nutrient run-off from the Catchment. Excess nutrients promote algae growth, which can smother seagrass when in high concentrations.

Our annual seagrass monitoring program, Keep Watch, is a partnership with Edith Cowan University, Water Corporation and Department of Biodiversity, Conservation and Attractions, which monitors seagrass health and distribution at eight key sites. Learn more in the latest Keep Watch Seagrass Monitoring Report.