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Constructed from 800 tonnes of local limestone and 60 custom concrete structures seeded with native flat oysters, this underwater haven rises from a sandy seabed at 8-10 m depth. It's already attracting King George Whiting and Snapper, offering a rare chance to snorkel over Australia's largest shellfish restoration project—a living, growing reef teeming with marine life.","intermediate",null,"published",{"name":59,"amplitude":75,"phase":91,"latitude":22,"model":107,"epoch":108},[60,61,62,63,64,65,66,67,68,69,70,71,72,73,74],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[76,77,78,79,80,81,82,83,84,85,86,87,88,89,90],0.032416973184664855,0.012224032103667756,0.263734520342943,0.1411314982674116,0.635971845015056,0.026361831521901035,0.00117308060944189,0.010990034010919357,0.033555418075776916,0.17835510188462764,0.07473432862879427,0.04266988727929356,0.01245687206139835,0.55904026753683,0.04166893446800689,[92,93,94,95,96,97,98,99,100,101,102,103,104,105,106],235.70461922124412,278.7810780999517,268.8889102499148,259.0546451973522,189.36157719496066,324.04818515827037,281.89605906222477,269.5769376564719,276.68378053486396,250.0278343298537,263.9610263352,234.93386449534,267.89760394119156,240.23470298932227,213.77960030467466,"EOT20","1992-01-01T00:00:00Z",[110,114,118,121],{"name":111,"description":112,"severity":113,"season_start":56,"season_end":56},"Offshore distance and wind exposure","The reef is 7 km offshore. Gusty summer winds can develop quickly, making return crossings challenging for small boats.","warning",{"name":115,"description":116,"severity":117,"season_start":56,"season_end":56},"Tidal currents","Strong tidal flows can occur in the upper gulf, particularly around the limestone structures.","caution",{"name":119,"description":120,"severity":117,"season_start":56,"season_end":56},"Boat traffic","Recreational fishing boats operate in the area; snorkelers must stay vigilant.",{"name":122,"description":123,"severity":117,"season_start":56,"season_end":56},"No anchoring zone","No anchoring is permitted on the reef—boats must use moorings or drift dive. Snorkelers require boat support.",{"directions":125,"parking":126,"facilities":56,"fees":127,"access_method":128},"Launch from Rogues Point or Ardrossan boat ramps and head 7 km offshore into Gulf St Vincent. The GPS coordinates of the reef are approximately 34°30.5' S, 137°53.95' E.","Boat-trailer parking available at Rogues Point and Ardrossan boat ramps.","No entry fee; standard SA recreational fishing rules apply.","boat","2026-07-27T02:57:21.103209Z","2026-08-04T05:32:31.002756Z",{"verdict":132,"evaluated_at":133,"models":134},"go","2026-10-02T02:24:24.339263Z",[135,142,147],{"model_name":136,"is_favourable":137,"value":138,"threshold":139,"unit":140,"operator":141},"Wind Speed",true,1.19,10,"kn","lte",{"model_name":143,"is_favourable":137,"value":144,"threshold":145,"unit":146,"operator":141},"Wave Height",0.032,0.5,"m",{"model_name":148,"is_favourable":149,"value":150,"threshold":40,"unit":151,"operator":152},"Visibility",false,0.99,"","gte",{"verdict":132,"rating":154,"evaluated_at":133,"generated_at":133,"source":155,"confidence":156,"visibility":159,"parameters":160,"models_passed":43,"models_total":176},"Good","precomputed",{"level":157,"value":158},"High",92.5,{"score":150,"rating":56,"confidence":56},[161,163,169,172,178],{"name":143,"value":162,"label":56,"unit":146,"favourable":137,"score":43,"optimal_max":145,"marginal_max":36},0.03235492872427982,{"name":164,"value":165,"label":56,"unit":166,"favourable":137,"score":43,"optimal_max":167,"marginal_max":168},"Swell Period",3.85,"s",8,12,{"name":136,"value":170,"label":56,"unit":140,"favourable":137,"score":43,"optimal_max":139,"marginal_max":171},1.1908252507439407,15,{"name":173,"value":174,"label":56,"unit":175,"favourable":149,"score":36,"optimal_max":176,"marginal_max":177},"Precipitation",11,"mm",5,20,{"name":179,"value":56,"label":180,"unit":151,"favourable":149,"score":36,"optimal_max":56,"marginal_max":56},"Tidal Phase","ebb",[],{"display_name":183},"Daniel","unverified",1790924524496]