At a glance:

• About the Bluff
• Snorkelling experience

About the Bluff

After a long journey through the Otway Ranges, the Barwon River makes a final sweep to the west, past the crumbling bluff of Mount Colite , before emptying into the breaking waves of Bass Strait . At the tip of the bluff, a pincer-shaped reef juts out into the sea.

The composition of the reef reflects the complex geological history of the site. The eastern half of the pincer is basalt formed from a lava flow from nearby Mt. Duneed , the west pincer is old sandstone formed under ancient seas, while the bluff itself is calcarenite, the remains of an old dune that formed on top of the lava.

The reef is famous for the diversity of its sea-life, particularly in the intertidal areas. The far eastern edge of the reef falls under the influence of the river while to the west the sandstone reef is exposed to ocean swell.

Snorkelling experience

Snorkelling and diving at the Bluff are excellent with a wide diversity of habitats in a small area.

The tip of the eastern reef supports many filter-feeding animals such as feather stars and barnacles that enjoy the fast currents. The basalt has weathered into numerous boulders, ledges and pools that provide shelter for a large variety of animals.

Between the reef pincers there is a small bay with a floor of snad and rock. Small colourful sea-slugs can be found along the reef sides. Stands of Giant Kelp sway with the waves, tempting snorkellers to swim through and experience an underwater forest. Giant rays regularly sweep along the sand. Offshore, small commies and fringes with Bull Kelp, hiding colourful sponges below.

Marine parks are protected from fishing, spearing and other damaging human activities.