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Troy Avenue terminates above beach WA 856, which is a continuation of Waterman beach, with a small section of protruding bluff separating the two. It is a 300 m long narrow high tide beach that occupies the next indentation in the bluffs and is fronted by a continuous intertidal platform, with reefs extending off the boundary bluffs and off the centre of the beach. The platform and reefs enclose the Lennard tidal pool. It is backed by vegetated dune-draped 15 m high bluffs, with a curving walking track down to the centre of the beach. Marmion Beach marks the end of the calcarenite bluffs and the beginning of what was once a continuous sand beach up to the protruding sandy foreland at Mullaloo Point, 4 km to the north. However since the 1990’s the Sorrento groynes and the large Hillarys boat harbour have been constructed in the centre of the beach, dividing it into Marmion Beach (WA 857), the Sorrento beaches (WA 858 & 859), two beaches in the boat harbour (WA 860 & 861) and then the longer remaining beach up to Mullaloo Point (WA 863). The 1.5 km of shoreline between the end of the bluffs and the southern breakwater of the boat harbour contains three near continuous beaches (WA 857-859), only separated by the Sorrento groyne field.
Beach Length: 0.3km
General Hazard Rating: 5/10

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There are currently no services provided by Surf Life Saving Australia for this beach. Please take the time to browse the Surf Safety section of this website to learn more about staying safe when swimming at Australian beaches. Click here to visit general surf education information.


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SLSA provides this information as a guide only. Surf conditions are variable and therefore this information should not be relied upon as a substitute for observation of local conditions and an understanding of your abilities in the surf. SLSA reminds you to always swim between the red and yellow flags and never swim at unpatrolled beaches. SLSA takes all care and responsibility for any translation but it cannot guarantee that all translations will be accurate.