[{"data":1,"prerenderedAt":236},["ShallowReactive",2],{"leaderboard-total":3,"spot-hippolyte-rocks":9,"spot-seo-hippolyte-rocks":202},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-03T06:32:05.526386Z",{"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":117,"area_boundary":75,"routes":75,"created_at":126,"updated_at":127,"today_conditions":128,"today_verdict_view":150,"images":179,"submitted_by":198,"region_name":200,"verification_status":201,"verified_at":75,"disputed":164,"verifier_count":5,"last_verified_display_name":75},"6fb609c5-a0a6-462b-a2bf-394b4bda00cc","Hippolyte Rocks","hippolyte-rocks",-43.121706,148.053379,"Rising 65 metres from the Tasman Sea off the Tasman Peninsula, Hippolyte Rocks is an exposed granite island group renowned as one of Tasmania's finest dive and snorkel destinations. Beneath the surface, bull kelp gives way at 30 metres to a vibrant temperate reef of colourful sponges, sea whips, coral, and anemones that rivals tropical systems. Swim-throughs carved into Big Hippolyte by erosion teem with fish, while a resident seal colony often investigates visitors. The site also harbours two historic shipwrecks — the Tasman (1883) and Nord (1915) — adding a layer of underwater exploration. Accessible only by boat from Pirates Bay or Fortescue Bay, this remote spot demands calm westerly winds and near-zero swell, making it a challenging but unforgettable adventure for experienced snorkellers and divers.","advanced","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_hippolyte-rocks_0_8d0d058ccb9b.jpg","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],0.013298242782870963,0.008845937211610784,0.1694608498681577,0.011975390000526808,0.27141882083705954,0.0027198448201795206,0.00888221923012122,0.003152014818811374,0.07324665919252712,0.113553587797421,0.05252815433989231,0.027679222842760847,0.009862276796060694,0.02100611183144631,0.0036234462985977748,[53,54,55,56,57,58,59,60,61,62,63,64,65,66,67],269.8196878642526,318.0131968821641,298.5903912713546,277.2495346530096,312.0363789468074,245.70653355538366,157.5767175814731,183.47068432637232,299.1651244825308,272.15414301597446,293.3898918717501,252.44527130270686,29.687144788457072,316.0899801498596,234.18049336122317,"EOT20","1992-01-01T00:00:00Z",[71,76,80,83,88,91,94,97,100,103,108,111,114],{"name":72,"description":73,"severity":74,"season_start":75,"season_end":75},"Ocean swell & exposed conditions","The rocks are fully exposed to the Tasman Sea. Requires near-zero swell and westerly winds; large swells make the site inaccessible and dangerous.","danger",null,{"name":77,"description":78,"severity":79,"season_start":75,"season_end":75},"Strong ocean currents","Exposed to ocean currents that can be unpredictable. Snorkellers and divers must be alert to sudden changes in water movement.","warning",{"name":81,"description":82,"severity":79,"season_start":75,"season_end":75},"Deep water & cold temperatures","Reef drops to 65 metres; bull kelp grows to 15m. Cold temperate water requires appropriate exposure protection. Advanced certification needed below 30m.",{"name":84,"description":85,"severity":86,"season_start":87,"season_end":87},"Boat traffic from tuna fishermen","Fishing boats targeting bluefin tuna often operate in the area, creating a hazard for snorkellers and divers on the surface.","caution",11,{"name":89,"description":90,"severity":74,"season_start":75,"season_end":75},"Uncharted needle rocks & shipwrecks","Submerged rocks such as The Needle and The Pie lie just below the surface. Two shipwrecks (Tasman and Nord) are present at depth — navigational hazard for boats.",{"name":92,"description":93,"severity":74,"season_start":75,"season_end":75},"Swell and Wave Action","Exposed to prevailing westerly swells and storms; calm westerly winds and no swell are required for safe conditions.",{"name":95,"description":96,"severity":86,"season_start":75,"season_end":75},"Cold Water Temperature","Water temperatures range from 11–18°C year-round, posing cold-water risks without proper exposure protection.",{"name":98,"description":99,"severity":79,"season_start":75,"season_end":75},"Rocky Reefs and Submerged Hazards","Treacherous rocky reefs and submerged granite outcrops surround the islands, with documented shipwrecks including the SS Tasman.",{"name":101,"description":102,"severity":79,"season_start":75,"season_end":75},"Remote Offshore Location","Located ~10 km offshore with no land-based emergency services nearby; self-sufficiency and boat support essential.",{"name":104,"description":105,"severity":74,"season_start":106,"season_end":107},"Open Ocean Swell","Hippolyte Rock is fully exposed to the Tasman Sea. Large swells can roll in suddenly, making the site inaccessible. Requires no swell and westerly winds.",1,12,{"name":109,"description":110,"severity":79,"season_start":106,"season_end":107},"Deep Water Drops","The sea bed drops to 100 m around the rocks. Snorkelers must stay close to the reef edges; the bottom is beyond recreational depths.",{"name":112,"description":113,"severity":74,"season_start":106,"season_end":107},"Submerged Rock - The Needle","A partially submerged rock pinnacle between Big and Little Hippolyte that has claimed multiple ships. Extremely hazardous for boat traffic and surface swimmers.",{"name":115,"description":116,"severity":86,"season_start":75,"season_end":75},"Boat Traffic - Fishing Charters","The area is a popular recreational fishing ground for Bluefin Tuna. Fishermen may be active overhead, posing a collision risk to snorkelers.",{"directions":118,"parking":119,"facilities":120,"fees":124,"access_method":125},"Located approximately 10 km south of Pirates Bay and 8 km east of Fortescue Bay on the Tasman Peninsula. Boat access only — launch from Pirates Bay boat ramp or Fortescue Bay boat ramp. The site is about 10–20 minutes by boat from either ramp.","Parking available at Pirates Bay and Fortescue Bay boat ramps (Tasman National Park — Parks Pass may be required).",[121,122,123],"boat_ramp","parking","toilets","Tasman National Park vehicle entry fee applies for parking (around $40–$60\u002Fday interstate).","boat","2026-07-27T02:57:47.121090Z","2026-08-04T05:34:24.990593Z",{"verdict":129,"evaluated_at":130,"models":131},"marginal","2026-10-03T02:17:37.052840Z",[132,139,144],{"model_name":133,"is_favourable":134,"value":135,"threshold":136,"unit":137,"operator":138},"Wind Speed",true,8.53,10,"kn","lte",{"model_name":140,"is_favourable":134,"value":141,"threshold":142,"unit":143,"operator":138},"Wave Height",0.124,0.5,"m",{"model_name":145,"is_favourable":134,"value":146,"threshold":147,"unit":148,"operator":149},"Visibility",2.46,2,"","gte",{"verdict":129,"rating":151,"evaluated_at":130,"generated_at":130,"source":152,"confidence":153,"visibility":156,"parameters":157,"models_passed":178,"models_total":173},"Fair","precomputed",{"level":154,"value":155},"High",100,{"score":146,"rating":75,"confidence":75},[158,160,166,169,175],{"name":140,"value":141,"label":75,"unit":143,"favourable":134,"score":159,"optimal_max":142,"marginal_max":106},3,{"name":161,"value":162,"label":75,"unit":163,"favourable":164,"score":5,"optimal_max":165,"marginal_max":107},"Swell Period",12.05,"s",false,8,{"name":133,"value":167,"label":75,"unit":137,"favourable":134,"score":159,"optimal_max":136,"marginal_max":168},8.527237859385343,15,{"name":170,"value":171,"label":75,"unit":172,"favourable":134,"score":159,"optimal_max":173,"marginal_max":174},"Precipitation",1.3,"mm",5,20,{"name":176,"value":75,"label":177,"unit":148,"favourable":134,"score":159,"optimal_max":75,"marginal_max":75},"Tidal Phase","slack",4,[180,185,188,193],{"id":181,"image_url":17,"sort_order":5,"is_primary":134,"moderation_status":182,"license":183,"license_url":184,"attribution":75,"author_name":75},"848c8abe-0b69-4918-9255-3f7c9d3c9987","approved","CC BY 2.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F2.0\u002F",{"id":186,"image_url":187,"sort_order":106,"is_primary":164,"moderation_status":182,"license":183,"license_url":184,"attribution":75,"author_name":75},"597a8780-f96b-4b0d-bf69-9b713c882796","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_hippolyte-rocks_1_766725b34514.jpg",{"id":189,"image_url":190,"sort_order":147,"is_primary":164,"moderation_status":182,"license":191,"license_url":192,"attribution":75,"author_name":75},"5e82329d-51d0-4622-8b3a-12e988a6ea73","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_hippolyte-rocks_2_4c1001dbfe64.jpg","CC BY-SA 3.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F3.0\u002F",{"id":194,"image_url":195,"sort_order":159,"is_primary":164,"moderation_status":182,"license":191,"license_url":192,"attribution":196,"author_name":197},"4041beb9-faf6-492c-811f-3f33c9f087b5","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_hippolyte-rocks_3_48a791ddadc8.jpg","Photo by JJ Harrison ( https:\u002F\u002Fwww.jjharrison.com.au\u002F )","JJ Harrison",{"display_name":199},"Daniel","Tasmania","unverified",{"title":203,"description":204,"canonical_url":205,"og_image":17,"structured_data":206,"breadcrumbs":229},"Snorkeling Conditions at Hippolyte Rocks - How's the Spot","Check snorkeling conditions at Hippolyte Rocks, Tasmania. Fair conditions, water 13.6°C, waves 0.12m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fhippolyte-rocks",[207,216],{"@context":208,"@type":209,"name":11,"description":210,"url":205,"geo":211,"address":213},"https:\u002F\u002Fschema.org","Place","Rising 65 metres from the Tasman Sea off the Tasman Peninsula, Hippolyte Rocks is an exposed granite island group renowned as one of Tasmania's finest dive and snorkel destinations. Beneath the sur...",{"@type":212,"latitude":13,"longitude":14},"GeoCoordinates",{"@type":214,"addressRegion":200,"addressCountry":215},"PostalAddress","Australia",{"@context":208,"@type":217,"name":218,"description":204,"url":205,"breadcrumb":219},"WebPage","Snorkeling Conditions at Hippolyte Rocks",{"@context":208,"@type":220,"itemListElement":221},"BreadcrumbList",[222,226,228],{"@type":223,"position":106,"name":224,"item":225},"ListItem","Home","https:\u002F\u002Fhowsthespot.com",{"@type":223,"position":147,"name":200,"item":227},"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=tasmania",{"@type":223,"position":159,"name":11,"item":205},[230,232,234],{"label":224,"href":231},"\u002F",{"label":200,"href":233},"\u002Fexplore?region=tasmania",{"label":11,"href":235},"\u002Fspots\u002Fhippolyte-rocks",1791009160393]