Jellyfish disrupt Nuclear Plants
August 20 , 2025
17 hrs 0 min
13
- Jellyfish swarms blocked the cooling water intake pipes, leading to a temporary shutdown of one of France’s major nuclear power plants.
- These plants rely on a continuous flow of seawater to cool their reactors and turbines.
- Jellyfish blooms can quickly block by clustering in massive numbers.
- Dead jellyfish can turn into a gel-like substance that passes through screens and damages internal systems.
- Cleaning jellyfish from intake pipes is a difficult and risky process that can take up to two days.
- Since the 1990s, jellyfish have increasingly disrupted nuclear plants worldwide.
- Climate change has warmed ocean waters, accelerating jellyfish reproduction and increasing their food supply.
- Overfishing and plastic pollution have further boosted jellyfish populations by removing predators and providing breeding grounds near coastlines.

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