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Beneath the warm waters off Jamaica’s northern coast, something remarkable is happening. Researchers and a Berlin based Italian artist are installing underwater speakers on dying coral reefs in hopes that sound itself might be the key to bringing marine ecosystems back from collapse. It sounds almost poetic, and in many ways it is.
Healthy coral reefs are anything but silent. They hum and click and pulse with the sounds of fish, shrimp, and countless other creatures going about their lives. But as ocean temperatures have surged due to the climate crisis, bleaching events have swept across the world’s reefs, leaving behind ghostly white skeletons and an unsettling quiet. When a reef goes silent, marine life stops coming. And when marine life stops coming, the reef continues to die.
Marco Barotti, a sound artist whose entire creative practice centers on the power of acoustics, first encountered research suggesting that broadcasting healthy reef sounds could attract fish and coral larvae back to damaged areas. That idea sparked a project that has since taken him from Italy all the way to Jamaica. The underwater sculptures he designs, built from 3D scans of coral structures, now double as housing for waterproof speakers that play recorded reef sounds 14 hours a day, powered entirely by solar panels floating at the surface. According to Climate Central, a similar acoustic experiment conducted on the Great Barrier Reef saw fish populations double within just six weeks.
The work does not stop at sound. At the Alligator Head Foundation, marine researchers are also growing coral fragments in labs and exploring assisted reproduction to help reefs replenish themselves when natural breeding has broken down. Coral sculptures become reef structures, fragments grow into colonies, and sound draws in the wildlife needed to sustain it all. It is a layered, creative, deeply human response to a crisis unfolding in slow motion under the waves.
Since 1950, the world has lost roughly half of its coral reefs to overfishing, Pollution, and warming seas. These ecosystems cover just one percent of the ocean floor yet Support a quarter of all marine life and protect coastlines from powerful storms. The stakes could not be higher. But projects like this one remind us that hope, ingenuity, and even art still have a role to play in healing the planet.
Video Source: PBS NewsHour and Climate Central/Youtube
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