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People Fixing the World
The bubble barrier cleaning up rivers
Jul 25, 2023
Dutch inventors use a bubble barrier to remove plastic from water, sound is used to attract fish back to damaged coral reefs, a hand-cranked washing machine makes laundry easier for impoverished women
24:46
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Quick takeaways
- Playing recordings of healthy coral reef sounds can attract fish back to damaged reefs, aiding in their regeneration.
- The Great Bubble Barrier, a system developed in the Netherlands, uses bubbles to lift and collect floating plastic waste, potentially preventing plastic pollution in rivers worldwide.
Deep dives
Using underwater speakers to regenerate coral reefs
Scientists have found that playing recordings of healthy coral reef sounds through underwater speakers can attract fish back to damaged reefs, aiding in their regeneration. The sounds of snapping shrimp and various fish noises create a vibrant soundscape on a healthy reef. By using underwater loudspeakers with recordings taken from a healthy reef, researchers have successfully attracted twice as many fish to damaged reefs, resulting in a more abundant and diverse community.
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Discover
highlights
Listen to the best highlights from the podcasts you love and dive into the full episode