[{"data":1,"prerenderedAt":182},["ShallowReactive",2],{"leaderboard-total":3,"spot-upper-gulf-st-vincent-marine-park-seagrass-beds-intertidal-area":9,"spot-seo-upper-gulf-st-vincent-marine-park-seagrass-beds-intertidal-area":147},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-02T06:59:37.379659Z",{"id":10,"name":11,"slug":12,"latitude":13,"longitude":14,"description":15,"difficulty":16,"image_url":17,"status":18,"tide_constituents":19,"hazard_entries":70,"access_info_structured":84,"area_boundary":17,"routes":17,"created_at":90,"updated_at":91,"today_conditions":92,"today_verdict_view":115,"images":142,"submitted_by":143,"region_name":145,"verification_status":146,"verified_at":17,"disputed":110,"verifier_count":5,"last_verified_display_name":17},"69fb35c7-72ca-4b28-ae4e-d820e7aa572d","Upper Gulf St Vincent Marine Park (seagrass beds & intertidal area)","upper-gulf-st-vincent-marine-park-seagrass-beds-intertidal-area",-34.55,138.3,"Upper Gulf St Vincent Marine Park protects vast, shallow seagrass meadows and expansive intertidal mudflats along the eastern shores of the Yorke Peninsula. The warm, nutrient-rich waters support dense beds of Neptune's seagrass, home to protected pipefish, blue swimmer crabs, rays and juvenile garfish. The intertidal zone reveals razorfish beds, mangrove-lined creeks and saltmarsh habitat — a unique snorkeling environment where you can drift above lush underwater pastures at high tide, observing the intricate marine life that relies on this critical estuarine ecosystem.","beginner",null,"published",{"name":20,"amplitude":36,"phase":52,"latitude":13,"model":68,"epoch":69},[21,22,23,24,25,26,27,28,29,30,31,32,33,34,35],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[37,38,39,40,41,42,43,44,45,46,47,48,49,50,51],0.03296337461392025,0.01294630866331025,0.26192953702033284,0.14279155353711476,0.6303828279857823,0.029823485908042815,0.002115926645305236,0.012232941922637299,0.03442386226509374,0.17584358269934924,0.07481181124718193,0.04201708277936798,0.015901340842911567,0.5557058470172993,0.041646687916286354,[53,54,55,56,57,58,59,60,61,62,63,64,65,66,67],238.9537474398943,277.20264801171834,269.97664773682845,262.38566143573536,193.03857275388384,326.8426057505225,299.0338386595201,273.428894471157,284.0933516110001,250.93992030046223,264.41160674665775,236.7333415730755,249.79424859626033,244.08151944612712,216.81101469810199,"EOT20","1992-01-01T00:00:00Z",[71,75,81],{"name":72,"description":73,"severity":74,"season_start":17,"season_end":17},"Soft muddy substrate","Intertidal mudflats can be very soft and slippery, making entry and exit difficult at low tide. Snorkeling is best at high tide over the seagrass beds.","caution",{"name":76,"description":77,"severity":78,"season_start":79,"season_end":80},"Shifting tides","The upper gulf has a significant tidal range. Incoming and outgoing tides create currents that can carry snorkelers across the shallow flats away from entry points.","warning",1,12,{"name":82,"description":83,"severity":74,"season_start":17,"season_end":17},"Boat traffic","Some areas of the marine park are accessible by boat and vessel traffic may be present near channels. Snorkelers should stay aware of their surroundings.",{"directions":85,"parking":86,"facilities":87,"fees":88,"access_method":89},"The Upper Gulf St Vincent Marine Park stretches from Port Wakefield south to just north of Adelaide. The best shore-access snorkeling is at high tide from beaches along the eastern Yorke Peninsula coast, or via small towns like Port Wakefield, Ardrossan, or Pine Point. From Adelaide, drive north-west via the Port Wakefield Highway (A1) for approximately 1 hour.","Limited roadside parking available at beach access points along Yorke Peninsula. No dedicated snorkel parking lots.",[],"Free entry. No permits required for recreational snorkeling within the marine park.","shore_entry","2026-07-27T02:57:21.088022Z","2026-08-04T05:32:31.002745Z",{"verdict":93,"evaluated_at":94,"models":95},"go","2026-10-02T02:19:32.341309Z",[96,103,108],{"model_name":97,"is_favourable":98,"value":99,"threshold":100,"unit":101,"operator":102},"Wind Speed",true,6.14,10,"kn","lte",{"model_name":104,"is_favourable":98,"value":105,"threshold":106,"unit":107,"operator":102},"Wave Height",0.07,0.5,"m",{"model_name":109,"is_favourable":110,"value":111,"threshold":112,"unit":113,"operator":114},"Visibility",false,0.99,2,"","gte",{"verdict":93,"rating":116,"evaluated_at":94,"generated_at":94,"source":117,"confidence":118,"visibility":121,"parameters":122,"models_passed":112,"models_total":137},"Good","precomputed",{"level":119,"value":120},"High",100,{"score":111,"rating":17,"confidence":17},[123,125,130,133,139],{"name":104,"value":105,"label":17,"unit":107,"favourable":98,"score":124,"optimal_max":106,"marginal_max":79},3,{"name":126,"value":127,"label":17,"unit":128,"favourable":110,"score":79,"optimal_max":129,"marginal_max":80},"Swell Period",8.3,"s",8,{"name":97,"value":131,"label":17,"unit":101,"favourable":98,"score":124,"optimal_max":100,"marginal_max":132},6.142534400000001,15,{"name":134,"value":135,"label":17,"unit":136,"favourable":110,"score":79,"optimal_max":137,"marginal_max":138},"Precipitation",13,"mm",5,20,{"name":140,"value":17,"label":141,"unit":113,"favourable":110,"score":79,"optimal_max":17,"marginal_max":17},"Tidal Phase","ebb",[],{"display_name":144},"Daniel","South Australia","unverified",{"title":148,"description":149,"canonical_url":150,"og_image":151,"structured_data":152,"breadcrumbs":175},"Snorkeling Conditions at Upper Gulf St Vincent Marine Park (seagrass beds & intertidal area) - How's the Spot","Check snorkeling conditions at Upper Gulf St Vincent Marine Park (seagrass beds & intertidal area), South Australia. Good conditions, water 16.5°C, waves 0.07m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fupper-gulf-st-vincent-marine-park-seagrass-beds-intertidal-area","https:\u002F\u002Fhowsthespot.com\u002Fog-default.png",[153,162],{"@context":154,"@type":155,"name":11,"description":156,"url":150,"geo":157,"address":159},"https:\u002F\u002Fschema.org","Place","Upper Gulf St Vincent Marine Park protects vast, shallow seagrass meadows and expansive intertidal mudflats along the eastern shores of the Yorke Peninsula. The warm, nutrient-rich waters support d...",{"@type":158,"latitude":13,"longitude":14},"GeoCoordinates",{"@type":160,"addressRegion":145,"addressCountry":161},"PostalAddress","Australia",{"@context":154,"@type":163,"name":164,"description":149,"url":150,"breadcrumb":165},"WebPage","Snorkeling Conditions at Upper Gulf St Vincent Marine Park (seagrass beds & intertidal area)",{"@context":154,"@type":166,"itemListElement":167},"BreadcrumbList",[168,172,174],{"@type":169,"position":79,"name":170,"item":171},"ListItem","Home","https:\u002F\u002Fhowsthespot.com",{"@type":169,"position":112,"name":145,"item":173},"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=south-australia",{"@type":169,"position":124,"name":11,"item":150},[176,178,180],{"label":170,"href":177},"\u002F",{"label":145,"href":179},"\u002Fexplore?region=south-australia",{"label":11,"href":181},"\u002Fspots\u002Fupper-gulf-st-vincent-marine-park-seagrass-beds-intertidal-area",1790924519000]