Geography
One bay has the highest tides on Earth — up to 16 metres
Twice a day, the Bay of Fundy between Nova Scotia and New Brunswick swings by up to 16 metres between low and high tide, the largest tidal range on the planet. The funnel-shaped bay resonates with the incoming Atlantic tide because its natural sloshing period nearly matches the roughly 12.4-hour tidal cycle, amplifying it like a rocked bathtub. At low tide the seafloor lies exposed for kilometres before the water returns.