bournda eec
bournda eec

Intertidal Rocky Shores

Some of the marine and coastal habitats within the Bournda area include sandy beaches, intertidal rocky shores and subtidal rocky reefs. The waters of the Sapphire Coast are often referred to as a transition zone, where the cooler waters of Bass Strait mix with the warmer waters of the East Australian Current. This creates and interesting mix of species diversity.

Intertidal rock shores occur along the rugged coastline from Turingal Head to Kianinny Bay in the north of the park as well as around headlands and Bournda Island in the southern section.

Species that live in the intertidal rocky shore have to be well adapted to endure the harsh conditions they face on a daily basis. Pounding surf, fluctuations in temperature and salinity, marine and terrestrial predators make this a challenging environment to survive in.

Along the rocky shoreline of Bournda National Park barnacles, cunjevoi, anemones, oysters and mussels secure themselves firmly to the rocks and feed primarily on plankton when the tide is high. When the tide is low they must retract and try to retain water to prevent desiccation until the tide returns. Other more mobile species such as crabs and predatory molluscs search for food amongst the crevices and tidal pools.

Some species of fish, such as blennies, may spend their entire lives within the larger tide pools. Others, such as the black drummer, will only use the tide pools as nursery areas and move to the subtidal reefs, as they grow larger.

Neptunes Necklace  Hormosira banksii

Neptunes Necklace

 

Black Nerites  Nerita atramentosa

Black Nerites

Cunjevoi  Pyura stolonifera

Cunjevoi