Bunurong Marine National Park (2,046 ha) is located on the Bass Strait coastline between Inverloch and Wonthaggi. While somewhat protected by King Island on the western edge of Bass Strait the park is regularly exposed to strong south-westerly swells from the Southern Ocean.  

The park has extensive intertidal sandstone rock platforms  with pink coralline algae, barnacles, and many molluscs, as well as large areas covered by the beaded algae Neptune's Necklace. Rockpools on the platforms provide a glimpse of marine life beyond the shore with kelp and fish often present in deeper pools.  The park has the highest diversity of intertidal and shallow subtidal invertebrate fauna in eastern Victoria. 

The subtidal rocky reefs which extend several kilometres from the shore are quite different to those in other parts of Victoria with shallow subtidal reefs rich in species of red and brown algae lacking the more typical kelp species of Golden Kelp and Crayweed.   

A multitude of more unusual plants and animals flourish in a rich underwater 'gardens' of seaweeds, with an abundance of brightly coloured sea-stars, feather stars, crabs, large marine snails, and many smaller animals.  Around the rocks at Eagles Nest and Twin Reefs groups of Port Jackson Sharks rest under the ledges, while Southern Rock Lobsters can be seen in the crevices, and Zebra Fish, Sweep and Blue-throated Wrasse dart about amongst the kelp. 

Further offshore beds of an ancient group of  coralline red algae known as Rhodoliths,  comprising pink unattached calcareous nodules, have been mapped.  

A number of marine species have only been recorded from the Bunurong area or reach their eastern distributional limits within the park. The park is also home to 31 conservation listed sea birds and shorebirds.