Acoustic enrichment for coral reef restoration

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Sound as a guide for life

Extract from TF1's 1PM news broadcast on November 11, 2025. Writing from Anaïs Barth, recording from Mathieu Alonso, editing from Inès Wick. Guétali Production in partnership with Antenne Réunion and the Natural Marine Reserve of Réunion Island.

Seafaring animals are often guided by sound to navigate in their environment. In particular, tropical marine species in their juvenile stages are particularly sensitive to the rich and complex acoustic signature of coral reefs.

As reefs get deteriorated and bleached, the ecosystem is damaged and the complexity of the soundscape is reduced. At Reef Pulse, we recreate the soundscape of endangered coral reefs to help them to attract fish and corals.

An underwater speaker emitting sounds from a healthy reef

An active restoration tool

We record soundscapes from healthy coral reefs and broadcast them in deteriorated environments using speakers, following a method that has been validated in Australia and in the Caribbean.

This acoustic restoration approach can be deployed by itself, or along with traditional coral reef restoration methods such as coral transplanting. It has the benefit of being light on labour: a single speaker can broadcast sound autonomously for 6 months. Additionally, the better propagation of sound in water allows this method to cover extended areas and bring back not only coral larvae, but also many fish species.

Pricing

Our acoustic restoration solution is a Product as a Service (PaaS). The hardware product you pay is yours and you can deploy it anywhere to provide a restoration service.
All pricings exclude VAT and shipping and are subject to change.

Cost

USD 9900 / site

  • 400 m² of acoustic restoration
  • First effects as soon as 40 days
  • Up to 6-month autonomy to cover the recruitment period of most species
  • Rechargeable battery

Option - Deployment

USD 0-10000

  • We share our deployment protocol proven for 10 years
  • You can deploy the equipment yourself
  • If you still need assistance for deploying the equipment, our team of professional divers (IDSA level 3) is here to help! The cost depends on the mission location

Educational discount

20 %

  • Are you a student, a scientist, or an NGO? We offer a 20 % discount on the hardware cost!

Our restoration projects via acoustics ↗
🇷🇪 Reunion Island - REACT

Coral reef restoration in Reunion Island by emitting ambient sounds recorded in healthy reefs.

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All our achievements

Operational since 2021, Reef Pulse has no less than 9 monitoring and restoration achievements, spanning 6 islands and 3 oceans.

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