[{"data":1,"prerenderedAt":159},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-discovery-bay-marine-national-park-offshore-reefs":9,"spot-discovery-bay-marine-national-park-offshore-reefs":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 Discovery Bay Marine National Park (offshore reefs) - How's the Spot","Check snorkeling conditions at Discovery Bay Marine National Park (offshore reefs), Victoria. Hazardous conditions, water 14.6°C, waves 1.66m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fdiscovery-bay-marine-national-park-offshore-reefs","https:\u002F\u002Fhowsthespot.com\u002Fog-default.png",[15,28],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","Discovery Bay Marine National Park (offshore reefs)","Discovery Bay Marine National Park is Victoria's wild marine gateway to the Great Australian Bight, protecting 2,770 ha of basalt and limestone reefs forged from ancient volcanic lava flows. Its of...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-38.412312,141.524806,{"@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 Discovery Bay Marine National Park (offshore reefs)",{"@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\u002Fdiscovery-bay-marine-national-park-offshore-reefs",{"id":52,"name":18,"slug":53,"latitude":22,"longitude":23,"description":54,"difficulty":55,"image_url":56,"status":57,"tide_constituents":58,"hazard_entries":60,"access_info_structured":98,"area_boundary":56,"routes":56,"created_at":105,"updated_at":106,"today_conditions":107,"today_verdict_view":128,"images":155,"submitted_by":156,"region_name":26,"verification_status":158,"verified_at":56,"disputed":113,"verifier_count":5,"last_verified_display_name":56},"7c6d4d01-62a0-46fa-aa72-0ac3d7a49738","discovery-bay-marine-national-park-offshore-reefs","Discovery Bay Marine National Park is Victoria's wild marine gateway to the Great Australian Bight, protecting 2,770 ha of basalt and limestone reefs forged from ancient volcanic lava flows. Its offshore reefs (30–60 m deep) rise from submerged ancient shorelines, blanketed in dazzling sponge gardens — technicolour thickets of sponges, ascidians, bryozoans, and gorgonians. Shallower nearshore basalt reefs are cloaked in golden brown kelp (Ecklonia radiata). The cold, nutrient-rich Bonney Upwelling fuels this ecosystem each summer, drawing Southern Rock Lobster, Black Lip Abalone, and migratory Blue Whales and Southern Right Whales. Snorkelling here is best in calm summer conditions but demands respect for the powerful Southern Ocean swell and currents.","advanced",null,"published",{"tide_note":59},"Tidal data not available; check local tide tables for Portland before visiting.",[61,65,68,71,76,80,83,86,89,92,95],{"name":62,"description":63,"severity":64,"season_start":56,"season_end":56},"4WD track access to beach","The vehicle track from Swan Lake campground to the beach requires a 4WD vehicle and may be soft or impassable after rain.","caution",{"name":66,"description":67,"severity":64,"season_start":56,"season_end":56},"Cold water temperatures","Southern Ocean waters can be very cold year-round, even in summer. Wetsuit essential.",{"name":69,"description":70,"severity":64,"season_start":56,"season_end":56},"Lake-to-sea opening hazards","When the lake mouth opens to the sea, shifting currents and submerged debris may be present near the entrance channel.",{"name":72,"description":73,"severity":74,"season_start":36,"season_end":75},"Strong currents and undertows","Powerful Southern Ocean currents and undertows can be hazardous for snorkellers, especially near reef edges.","danger",12,{"name":77,"description":78,"severity":79,"season_start":36,"season_end":75},"Large unexpected waves (sneaker waves)","Exposed coastline experiences one of the highest wave energy environments in Victoria; sudden large waves can sweep people off rock platforms.","warning",{"name":81,"description":82,"severity":79,"season_start":36,"season_end":75},"Changing tides","Some points of the park become impassable at high tide; tide timing is critical for safe entry and exit.",{"name":84,"description":85,"severity":64,"season_start":36,"season_end":75},"Cold water temperature","Nutrient-rich cold water year-round, especially during the Bonney Upwelling in summer, can cause rapid heat loss.",{"name":87,"description":88,"severity":79,"season_start":36,"season_end":75},"Remote location & limited services","The park is remote with limited mobile reception and few facilities; emergency help is far away.",{"name":90,"description":91,"severity":79,"season_start":56,"season_end":56},"Large unexpected waves","Sneaker waves can surge unexpectedly onto rock platforms, posing a risk to snorkellers and shore-walkers.",{"name":93,"description":94,"severity":74,"season_start":56,"season_end":56},"Exposed coastline conditions","The coastline is remote and highly exposed; conditions are often unsuitable for diving and snorkelling, requiring calm seas and careful weather assessment.",{"name":96,"description":97,"severity":64,"season_start":36,"season_end":75},"Slippery rock platforms","Basalt rock platforms become treacherous when wet; sturdy footwear with good grip is essential.",{"directions":99,"parking":100,"facilities":101,"fees":103,"access_method":104},"The park is located 20 km west of Portland, Victoria. Access via The Blowholes Road, Scenic Drive, and Portland-Nelson Road. The Great South West Walk trail starts at the Fisherman's Cove carpark and follows the clifftops to lookouts. Snorkellers access the offshore reefs from shore entry points along the Discovery Bay coastline or by boat launching from Cape Bridgewater or Portland.","Car parking available at Fisherman's Cove carpark and several trailhead pull-offs along The Blowholes Road and Scenic Drive.",[102],"parking","No fees for park entry. No fees for shore-based snorkelling access.","shore_entry","2026-07-27T02:57:24.035515Z","2026-07-27T02:57:24.035519Z",{"verdict":108,"evaluated_at":109,"models":110},"no_go","2026-10-03T02:21:40.564086Z",[111,118,123],{"model_name":112,"is_favourable":113,"value":114,"threshold":115,"unit":116,"operator":117},"Wind Speed",false,16.56,10,"kn","lte",{"model_name":119,"is_favourable":113,"value":120,"threshold":121,"unit":122,"operator":117},"Wave Height",1.656,0.5,"m",{"model_name":124,"is_favourable":113,"value":125,"threshold":40,"unit":126,"operator":127},"Visibility",0.91,"","gte",{"verdict":108,"rating":129,"evaluated_at":109,"generated_at":109,"source":130,"confidence":131,"visibility":134,"parameters":135,"models_passed":5,"models_total":150},"Hazardous","precomputed",{"level":132,"value":133},"High",100,{"score":125,"rating":56,"confidence":56},[136,138,143,146,152],{"name":119,"value":137,"label":56,"unit":122,"favourable":113,"score":5,"optimal_max":121,"marginal_max":36},1.6561097992592588,{"name":139,"value":140,"label":56,"unit":141,"favourable":113,"score":36,"optimal_max":142,"marginal_max":75},"Swell Period",10.65,"s",8,{"name":112,"value":144,"label":56,"unit":116,"favourable":113,"score":5,"optimal_max":115,"marginal_max":145},16.56298305520396,15,{"name":147,"value":148,"label":56,"unit":149,"favourable":113,"score":36,"optimal_max":150,"marginal_max":151},"Precipitation",16.8,"mm",5,20,{"name":153,"value":56,"label":154,"unit":126,"favourable":113,"score":36,"optimal_max":56,"marginal_max":56},"Tidal Phase","unknown",[],{"display_name":157},"Daniel","unverified",1791009147249]