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The beach sits within an area of limestone reefs and sandy inshore gutters that create clear, shallow snorkeling conditions on calm days. Its remote nature means fewer crowds and a peaceful underwater setting, with rocky reef edges giving way to sandy patches where rays and small fish congregate. Best visited during light northerly winds when the ocean side lies flat and the water clarity peaks.","beginner",null,"published",[59,65],{"name":60,"description":61,"severity":62,"season_start":63,"season_end":64},"Swell and waves","Posties Beach can experience exposed swell conditions with waves up to 1-2m, especially during southerly winds, creating strong shore break and rip currents.","warning",6,9,{"name":66,"description":67,"severity":68,"season_start":56,"season_end":56},"Oceanic swell surge","When southerly swell pushes in, surge around the limestone reef edges can push snorkelers into sharp rock.","caution",{"directions":70,"parking":71,"facilities":72,"fees":73,"access_method":74},"Posties Beach is located along the Limestone Coast south of Mount Gambier. Access is via unsealed roads off the main coastal route; a 4WD is recommended for the final approach. Follow signs towards the coast from the Port MacDonnell area.","Limited beachside parking on unsealed area near the access track. 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