Imagine: you are walking on the beach in Kijkduin or Scheveningen and suddenly the surf lights up bright blue. Magical, right? That is indeed what it looks like. But in reality, this is a group of scared algae. Sea spark! You don’t often come across them at Scheveningen and Kijkduin, unless you know where to go. And above all: when. We’ll tell you more about it.

The pictures of sea sparkle that you see sometimes seem photoshopped. In some cases, photographers do indeed use a slow shutter speed, so that the light in the photo is brighter than in real life. But believe us: sea spark can really be that bright. And of course you want to see that with your own eyes.

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A terrified alga

As we said, sea sparkle is actually a frightened alga (insofar as algae have emotions). The sea spark algae produces light when there are possible enemies in the area, to scare them off. It just doesn’t have the desired effect on humans. We just jump at the mysterious light.

The sea spark already lights up with a small displacement of water, like waves. This is also called bioluminescence: a chemical process in which a lot of energy is released and converted into light. When many (millions of) sea spark algae float together, this creates a light spectacle.

Welcome, heat wave!

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