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The St. Martins Sea Caves

Updated: May 26

St. Martins, New Brunswick, the home of The Beach Street Inn, also happens to be home to one of Canada's most stunning natural wonders: the St. Martins sea caves. While we think our inn is pretty special, UNESCO seems to believe that the Sea Caves might be a bigger draw, having identified them as an ‘Amazing Place’, so I suppose I have to agree.


Sea Caves

The sea caves are an incredible natural wonder that showcase the beauty and power of the Bay of Fundy. It's a must-see destination for anyone visiting New Brunswick.


The Sea Caves are seen just across the bay from the Inn and can be reached in about five minutes by car or twenty minutes on foot. Whether you walk or drive, you will pass through one of our two, iconic covered bridges.


The Best Way to Experience St. Martins Sea Caves

Visitors to the sea caves can explore the caves at low tide, which allows them to walk along the beach and into the caves themselves. The caves are filled with interesting rock formations, including stalactites and stalagmites and red rock boulders along the sea floor, which are covered in seaweed and mollusks.

The caves also have unique acoustics, making them a popular spot for musicians to perform or for regular people to say a simple ‘hellloooooo’ and hear the echo.

Sea Cave History

The caves were formed over thousands of years as the relentless waves from the bay’s tides carved out the soft sandstone cliffs. Our tides have created a unique ecosystem in the area, including the sea caves.


Caution is Required

While visiting the sea caves, it's important to be mindful of the tides which change quickly and unexpectedly. We recommend embarking for a visit as the tide is going out to ensure enough time. When the tide shifts and starts to come back in, it happens quickly . It's easy to get stranded or trapped in the caves so visitors should only explore the caves at low tide, and they should never venture too far out into the water.


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