The Bay of Fundy Isn't Weird—It's a Warning About Tidal Power

Imagine you're standing on the shore at Burntcoat Head, Nova Scotia, and the water is at your feet. You turn to check your phone. In six hours, that same spot is under 15 meters of seawater—enough to cover a five-story building. This isn't a freak storm or a tsunami. It's just Tuesday. The Bay of Fundy doesn't make headlines unless someone's kayaking over a waterfall or a tourist gets caught on the mudflats. That's the mistake. We treat the world's most extreme tides as a spectacle, not as the natural hazard—and natural opportunity—they actually are.

The question I'm answering today is blunt: Should we be afraid of the Bay of Fundy's tides, or should we be using them? The answer is both, and the fear should come first. Because if you don't respect a tide that can rise 15 meters (about 50 feet) in six hours, you won't live long enough to enjoy the renewable energy.

What Actually Causes a 15-Meter Tide?

Most people assume the Bay of Fundy is special because of some local quirk—a funnel shape, a lucky alignment. That's true, but it's not the whole story. The primary engine of all tides is the Moon's gravitational pull, which is about 2.2 times stronger than the Sun's in generating tides (Britannica / Tide). That's why we get two high and two low tides roughly every 12 hours 25 minutes. The Bay of Fundy doesn't break that rhythm. What it does is amplify it.

Think of a bathtub. Slosh it at the right frequency and the water builds up at one end. Fundy is a long, narrowing basin that happens to match the natural period of the tidal wave. So the ocean pushes in, and the water piles higher and higher. The result: spring tidal ranges up to 15 meters (about 50 feet) have been measured there—the largest known on Earth (Britannica / Tide). That's not a metaphor. That's a physical fact.

Now, here's the hazard part. A 15-meter tide means the shoreline moves horizontally by hundreds of meters in some places, every six hours. Anyone standing on mud flats when the water comes back is in immediate danger. The tide doesn't care about your hiking boots. It doesn't care that you saw a sand dollar. It's coming in at a speed you can't outrun in waders. This is why local authorities post warnings, and why you should never ignore them.

Why We Shouldn't Just Call It a Natural Wonder

Calling Fundy a natural wonder is fine, but it's a cop-out. It lets us off the hook. We gawk, take photos, and then drive away, leaving the real hazard to someone else. That's not how we treat other hazards. We don't just watch earthquakes; we build to survive them. We don't just watch volcanoes; we map their pyroclastic flows (Britannica / Volcano). So why do we treat the most extreme tide on Earth as a tourist attraction?

Here's the concrete reality: the Bay of Fundy isn't just a hazard—it's a power plant waiting to be built. The same vertical rise that drowns the unwary is a free energy source. Tidal power is predictable in a way that wind and solar aren't. You know exactly when the tide will rise and fall, to the minute, for centuries. That's not a guess. That's the difference between a resource and a renewable gamble.

But we haven't harnessed it at scale. Why? Because it's expensive, and because the environmental costs are real. But the longer we treat Fundy as a novelty, the longer we'll be stuck with fossil fuels and the slow-motion disaster of climate change. In 2025, the global surface temperature was 2.14°F (1.19°C) above the 1951–1980 average (NASA / Global Temperature). That's not a distant threat. That's a number we're living with. Tidal power won't fix everything, but it's a damn sight more predictable than a sunny day.

Comparing Tidal Power to the Alternatives

Let's put the options on the table. You want reliable, low-carbon energy. What do you pick?

The point isn't to trash solar or wind. The point is that tidal is uniquely predictable, and that's a huge advantage for grid stability. But you can't just plop a turbine in Fundy without planning. The same currents that make it powerful can destroy equipment. You have to design for the extreme, not the average. That's exactly the mindset we apply to earthquake engineering—design for the worst, not the typical. We don't build skyscrapers for a magnitude 5 when a magnitude 9 is possible. Similarly, we shouldn't build tidal turbines for a 2-meter tide when the Bay of Fundy throws 15 meters at you.

So, What Should We Do?

My recommendation is direct: stop treating the Bay of Fundy as a natural oddity and start treating it as a critical piece of infrastructure. That means three things. First, invest in tidal energy research and pilot projects in Fundy, but do it with the same rigor we apply to earthquake preparedness—assume the worst, plan for the extreme. Second, create a public education campaign that treats the tide as a hazard, not just a photo op. Every visitor should know that the water can rise 15 meters in six hours, and that's not a joke. Third, fund long-term monitoring of the tides and the ecosystem, because we don't fully understand the impact of large-scale tidal turbines on marine life. That's not a reason to do nothing; it's a reason to do it carefully.

We've already messed up the climate. The AMOC, that giant ocean conveyor, has declined in strength in the last two decades (NOAA NCEI / AMOC study). We can't afford to ignore a clean, predictable energy source just because it's hard. The Bay of Fundy is a natural hazard, yes. But it's also a natural gift. The only question is whether we're smart enough to use it.

Sources

• Britannica / Tide - https://www.britannica.com/science/tide
• Britannica / Volcano - https://www.britannica.com/science/volcano
• NASA / Global Temperature - https://climate.nasa.gov/vital-signs/global-temperature/
• NOAA NCEI / AMOC study - https://www.ncei.noaa.gov/news/decades-data-changing-atlantic-circulation