[{"data":1,"prerenderedAt":215},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-great-glennie-island":9,"spot-great-glennie-island":51},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-03T06:32:05.526386Z",{"title":10,"description":11,"canonical_url":12,"og_image":13,"structured_data":14,"breadcrumbs":44},"Snorkeling Conditions at Great Glennie Island - How's the Spot","Check snorkeling conditions at Great Glennie Island, Victoria. 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Shearwaters and penguins nest on its...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-39.1,146.5,{"@type":25,"addressRegion":26,"addressCountry":27},"PostalAddress","Victoria","Australia",{"@context":16,"@type":29,"name":30,"description":11,"url":12,"breadcrumb":31},"WebPage","Snorkeling Conditions at Great Glennie Island",{"@context":16,"@type":32,"itemListElement":33},"BreadcrumbList",[34,39,42],{"@type":35,"position":36,"name":37,"item":38},"ListItem",1,"Home","https:\u002F\u002Fhowsthespot.com",{"@type":35,"position":40,"name":26,"item":41},2,"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=victoria",{"@type":35,"position":43,"name":18,"item":12},3,[45,47,49],{"label":37,"href":46},"\u002F",{"label":26,"href":48},"\u002Fexplore?region=victoria",{"label":18,"href":50},"\u002Fspots\u002Fgreat-glennie-island",{"id":52,"name":18,"slug":53,"latitude":22,"longitude":23,"description":54,"difficulty":55,"image_url":13,"status":56,"tide_constituents":57,"hazard_entries":108,"access_info_structured":148,"area_boundary":113,"routes":113,"created_at":156,"updated_at":157,"today_conditions":158,"today_verdict_view":179,"images":204,"submitted_by":212,"region_name":26,"verification_status":214,"verified_at":113,"disputed":175,"verifier_count":5,"last_verified_display_name":113},"03957006-9cdf-4b09-9ecc-99fee9226672","great-glennie-island","Great Glennie Island is the largest of the Glennie group, a rugged granite island off the wild west coast of Wilsons Promontory in Victoria's Gippsland region. Shearwaters and penguins nest on its slopes, while the surrounding waters — protected within the Wilsons Promontory Marine National Park — are renowned for spectacular underwater scenery. Snorkelers who make the boat trip are rewarded with pristine granite reefs, kelp forests, and gin-clear water in a sheltered cove with a small beach landing.","intermediate","published",{"name":58,"amplitude":74,"phase":90,"latitude":22,"model":106,"epoch":107},[59,60,61,62,63,64,65,66,67,68,69,70,71,72,73],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[75,76,77,78,79,80,81,82,83,84,85,86,87,88,89],0.027377398354687537,0.012881672252145326,0.2342402367803771,0.040554921502874146,0.7472196084732788,0.007211216234048534,0.007345974474303634,0.0047380842126265475,0.17952025061530863,0.15349689973980463,0.07440298196738845,0.03780657783459878,0.008927713245871648,0.16171309842663067,0.014248405064468115,[91,92,93,94,95,96,97,98,99,100,101,102,103,104,105],328.30782182708015,324.8712189295381,296.5923417603949,213.64386509834753,40.13078377516683,203.85628744974952,194.17301488063453,252.66462442105416,5.683692718088907,271.23020934691135,293.2040072055113,256.7904126143476,16.966233295496124,203.2091121949809,182.99759803573232,"EOT20","1992-01-01T00:00:00Z",[109,114,117,122,127,130,133,136,139,142,145],{"name":110,"description":111,"severity":112,"season_start":113,"season_end":113},"Remote Location","Great Glennie Island is remote with no facilities. Emergency evacuation is extremely difficult — self-sufficiency and safety gear are essential.","warning",null,{"name":115,"description":116,"severity":112,"season_start":113,"season_end":113},"Exposed Swell Conditions","Wilsons Promontory's west coast receives significant Southern Ocean swell, creating strong surge around the island's granite shores.",{"name":118,"description":119,"severity":120,"season_start":36,"season_end":121},"Strong Tidal Currents","Tidal flows between the Glennie group islands can produce strong currents. Snorkel at slack tide and consult local tide charts.","caution",12,{"name":123,"description":124,"severity":120,"season_start":125,"season_end":126},"Cold Water Temperature","Water temperatures in this Bass Strait region are cold year-round (10-16°C), requiring a thick wetsuit for comfortable snorkeling.",5,10,{"name":128,"description":129,"severity":120,"season_start":113,"season_end":113},"Boat Access Only","The island is offshore and accessible only by private boat or organised charter. No ferry service operates here.",{"name":131,"description":132,"severity":112,"season_start":113,"season_end":113},"Remote offshore location","Dannevig Island is a remote island accessible only by boat — no emergency services or facilities on-site.",{"name":134,"description":135,"severity":112,"season_start":113,"season_end":113},"Strong ocean currents","Open ocean currents around the Glennie group can be strong and unpredictable, especially around the granite reefs.",{"name":137,"description":138,"severity":120,"season_start":113,"season_end":113},"Cold water temperatures","Southern Ocean waters off Wilsons Promontory are cold year-round, requiring a wetsuit (5mm+ recommended).",{"name":140,"description":141,"severity":120,"season_start":113,"season_end":113},"Exposed granite reef","Sharp, rugged granite boulders and reef formations pose cutting and entanglement hazards.",{"name":143,"description":144,"severity":120,"season_start":113,"season_end":113},"Boat traffic","Access is by boat only; snorkelers must remain vigilant for approaching vessels in the transit channel.",{"name":146,"description":147,"severity":120,"season_start":113,"season_end":113},"Swell and surge","Exposed granite shoreline subject to ocean swell and surge, increasing risk of being pushed against rocks.",{"directions":149,"parking":150,"facilities":151,"fees":154,"access_method":155},"Great Glennie Island lies off the west coast of Wilsons Promontory, approximately 5 km from Tidal River. Access is by private boat launched from Tidal River boat ramp or via charter from nearby ports. The island is within the Wilsons Promontory Marine National Park, which extends from Norman Beach to Cape Wellington.","Parking is available at the Tidal River campground and boat ramp within Wilsons Promontory National Park (park entry fees apply).",[152,153],"parking","toilets","Wilsons Promontory National Park entry fee applies (approx. 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