Canada
Fathom Five National Marine Park
Glass-bottomed boats glide over shipwrecks visible through Georgian Bay water clear as the Caribbean.
The shipwreck sits upright on the lake bottom, its hull, deck, and cargo visible through water clearer than the Caribbean. This is Fathom Five National Marine Park in Georgian Bay, Ontario — freshwater so transparent that divers can see 30 metres down.
Fathom Five protects 22 shipwrecks within its boundaries, many sitting upright in water clear enough to see from the surface. Glass-bottom boats cruise above the wrecks — hulls, anchors, and cargo visible through Georgian Bay's gin-clear water. Flowerpot Island's sea stacks are pillar-shaped remnants of an ancient seabed, topped with miniature forests and accessible by tour boat from Tobermory. The Grotto at nearby Bruce Peninsula National Park is a sea cave where turquoise water floods a rock chamber accessible by swimming through an underwater passage. The park sits at the tip of the Bruce Peninsula, where the Niagara Escarpment meets Lake Huron.
Family
The glass-bottom boats over the shipwrecks, the Flowerpot Island sea stacks, and the Grotto's swimmable sea cave give families a full day of natural wonder that feels like a theme park designed by geology.
Couple
Snorkelling above intact shipwrecks in freshwater so clear it rivals the tropics, then swimming through the Grotto's underwater passage — Fathom Five delivers shared adventure in an unlikely setting.
Friends
Scuba diving the shipwrecks, swimming the Grotto, and exploring Flowerpot Island make Fathom Five an action-packed group trip at the top of the Bruce Trail.
- Shipwrecks sit upright in water so clear you can see the deck from the surface — 22 wrecks within the park boundaries.
- The Grotto at nearby Bruce Peninsula is a sea cave where turquoise water floods a rock chamber accessible by swimming through an underwater passage.
- Flowerpot Island's sea stacks are pillar-shaped remnants of an ancient seabed, topped with miniature forests.
- Glass-bottom boats cruise above the wrecks — hulls, anchors, and cargo visible through Georgian Bay's gin-clear water.
Whitefish tacos at the Tobermory Brewing Company, the harbour just outside the window.
Fish and chips at the Crowsnest Pub — battered perch from the waters you were just snorkelling.
Ice cream at the Sweet Shop on Little Tub Harbour, a cone-in-hand tradition after the boat tour.
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