The media loves a "freak wave" because it sounds like an act of god. It’s convenient. It absolves the tourism boards of liability and the victim of a lack of situational awareness. When news broke of a British tourist being swept into the rocks after an earthquake, the headlines immediately leaned on the "unpredictable" narrative. It’s a lie. There is nothing unpredictable about energy transfer through water.
If you are standing on a rocky shoreline after seismic activity—even a minor tremor—and you get hit by a surge, you didn't encounter a freak of nature. You encountered a predictable, mathematical consequence of fluid dynamics. We need to stop romanticizing tragedies as "one-in-a-million" events and start talking about the lethal mechanics of the intertidal zone.
The Myth of the Rogue Wave
The tabloid "freak wave" narrative relies on the idea that the ocean occasionally decides to break the rules of physics. In reality, what happened in the recent tragedy was likely a localized surge or a seiche, exacerbated by the specific geometry of the coastline.
When an earthquake occurs, it doesn't just shake the ground; it displaces the water column. This isn't always a 50-foot tsunami that triggers sirens. Often, it is a low-frequency wave with a massive wavelength. You might not even see it coming because, in deep water, the amplitude is negligible. But as that energy hits the "shelf" of a rocky coast, the physics change.
The Shoaling Effect
As the water shallows, the wave speed decreases while the energy remains constant. To compensate, the height of the wave must increase. This is the Shoaling Effect.
$$P = \frac{1}{2} \rho g A^2 C_g$$
In this equation, $P$ represents the wave power, $\rho$ is the water density, $g$ is gravity, $A$ is the amplitude, and $C_g$ is the group velocity. When the velocity drops as the wave hits the shore, the amplitude must spike to maintain the power balance.
On a jagged, volcanic coastline, this isn't a clean swell. It is a hydraulic ram. The water doesn't just "splash" you; it pins you with thousands of pounds of pressure against barnacles and basalt. Calling this a "freak" occurrence is like calling a car crash a "freak" occurrence when you drive toward a brick wall at 60 miles per hour and refuse to hit the brakes.
The Tourism Industry’s Dangerous Silence
I have spent years consulting for coastal resorts and maritime safety boards. There is a persistent, quiet pressure to downplay the volatility of "scenic" shorelines. If you tell tourists that the picturesque black rocks are a high-velocity kill zone, they don't book the excursion.
Instead, we get generic "Caution: Slippery Rocks" signs. These signs are worse than useless; they are misleading. They imply the danger is a balance issue—a stubbed toe or a wet butt. They fail to mention that the water level can rise three meters in six seconds due to constructive interference.
Constructive Interference: The Real "Freak"
What people call a freak wave is usually just Constructive Interference. This happens when two or more wave trains overlapping in phase combine their heights. If a 1-meter swell meets another 1-meter swell at exactly the right point on a reef, you suddenly have a 2-meter wall of water.
Add a seismic pulse to the mix, and you have a recipe for a "sneaker wave." These aren't anomalies. They are statistical certainties given enough time. If you stand on the edge of a rocky promontory for three hours, the probability that you will encounter a wave significantly larger than the median height approaches 100%.
Survival is Not About Luck
The "People Also Ask" sections of travel forums are filled with nonsense like "How do I spot a freak wave?" or "Is it safe to walk on rocks during a low tide?"
The premise of these questions is flawed. You don't "spot" a wave that is moving at 30 knots with a wavelength longer than a football field. You avoid the environment entirely when the variables are stacked against you.
Why the "Never Turn Your Back on the Ocean" Rule is Insufficient
You’ve heard the cliché: "Never turn your back on the ocean." It’s a favorite of well-meaning locals and survival influencers. It’s also largely irrelevant when you are on a jagged cliff-face.
If a surge hits, seeing it coming for two seconds won't save you. The force of moving water is calculated as:
$$F = \frac{1}{2} C_d \rho A v^2$$
Where $F$ is the drag force, $C_d$ is the drag coefficient of the human body, $\rho$ is the fluid density, $A$ is the surface area of your body, and $v$ is the velocity of the water. Even at a modest velocity of 5 meters per second, the force exerted on an average adult is enough to snap bone or pull you into a crevice where the receding tide—the "backwash"—will drown you before the next wave even arrives.
Stop Romanticizing the "Edge"
The competitor article frames this as a "tragedy at a beauty spot." This framing is part of the problem. It treats the environment as a passive backdrop that occasionally "malfunctions."
We need to shift the culture of travel away from the "Instagram-worthy" ledge and toward a respect for fluid dynamics. The victim in this case wasn't just unlucky; she was in a high-energy environment during a period of geological instability.
If there is an earthquake, stay off the rocks. Period.
It doesn't matter if the tremor was small. It doesn't matter if the sea looks "flat." Energy travels through water faster and more efficiently than it travels through the air. By the time you feel the vibration, the displacement has already begun.
The Actionable Truth
If you find yourself in a coastal area after a seismic event, follow these rules or accept that you are gambling with your life:
- Elevation is your only shield. Horizontal distance from the water means nothing. A surge can travel hundreds of feet inland if the terrain is flat. You need verticality.
- Ignore the "Tide Tables." Seismic surges (seiches) do not follow the moon. They are oscillations within a basin. They can last for hours or even days after the initial shock.
- Rocks are meat grinders. If you are swept in, your biggest threat isn't drowning; it’s blunt force trauma. The water will use you as a hammer against the coastline.
We don't need more "freak wave" headlines. We need a population that understands that the ocean is a massive, indifferent engine of kinetic energy.
Stop looking for a "why" in the tragedy. The "why" is gravity, displacement, and a total lack of respect for the power of a medium that weighs 1,025 kilograms per cubic meter.
Get off the rocks.
