Oyster Harbour is a permanently open estuary covering an area of 15.6 square kilometres. It is used to shelter a fishing fleet carrying out commercial fishing and farming oysters and mussels. The harbour is used by thousands of waterbirds for feeding.

Mainly boat fishing takes place in Oyster Harbour but there is some jetty fishing. Likely catches include herring, skippy, whiting, squid, flathead and rock species.

Good swimming beaches and picnic areas make Oyster Harbour a great place for a family outing. Experience one of the boat cruises that operate in the harbour and venture up the Kalgan River to explore the natural scenery.