A mini-tsunami hit the coast of the Netherlands earlier this week, crashing onto the shore and destroying beach furniture.
The Netherlands is not used to such a phenomenon - in fact, it's so rare, local media have reported that this is the first time a mini-tsunami has ever been so well-filmed and recorded.
The clip, shot from an apartment in the costal resort of Zandvoort, shows the wave dragging away chairs, lounges and parasols, while the man says 'a tsunami' several times.
Reports of a 'medium height' wave were first reported at around 5.45am on Monday.
Advert
Credit: CEN
A second video, filmed 15 miles away, shows the wave retreating before crashing onto the shore while lightning flashes in the background.
Advert
The unusual atmospheric phenomenon is called meteotsunami, or meteorological tsunami, which are created when rapid changes in pressure cause water to displace.
Credit: CEN
Advert
They are often accompanied by thunder and lightning, like in this case, and usually happen during the spring, because the North Sea is still pretty cold.
Professor David Tappin of the British Geological Survey said: "Most tsunamis are geological, where you have a vertical movement on the seabed which can be caused by an earthquake, like in Japan in 2011, or a landslide.
Credit: CEN
Advert
"Meteotsunamis, however, are created by weather. You need a small, rapid change in atmospheric pressure of just a few millibars. If you get one of these then it can change the sea surface elevation by a few centimetres.
Credit: CEN
Advert
"In the deep ocean, this would not be noticeable but when it enters shallow water, whilst the weather system is moving at the same speed, then the sea level increases by several metres."
Nobody is reported to have been hurt by the meteotsunami, but some damage has been done - not least to the furniture of that beach resort, by the looks of things.
Featured Image Credit: CEN