Irwin Inlet

The South Coast Highway is about 3 kilometres (2 mi) north of the inlet.

A sandbar across the entrance to the inlet on the ocean side, but this is often breached during the winter.

The inlet is a wave dominated estuary with a total area of 13 square kilometres (5 sq mi); it is estimated that 30% of the catchment is cleared.

[3] The inlet is slowly turning into swampland as a result of its high sediment loading and shallow depth.

The basin supports large seagrass meadows and is used as a commercial fishery.