Artificial Reefs Use AI to Restore Eroding Coastlines
Engineered structures use ocean currents to capture sediment, providing a sustainable alternative to mechanical dredging.
Updated on Oct. 23, 2026 in Environmental
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Coastal Assembly has deployed 54 custom-designed marine-concrete artificial reef structures to naturally rebuild shorelines. Following a two-year pilot at the JW Marriott Maldives Resort & Spa, these structures have effectively captured sediment to double the size of the local beach.
Why it matters
The project offers a passive alternative to traditional sand dredging, a method often criticized for causing ecological damage and providing only temporary results. By using AI to model wave patterns, this approach uses ocean currents to create sustainable buffers against coastal erosion.
The system relies on 54 marine-concrete structures designed via AI modeling of site-specific bathymetry and wave conditions. These structures successfully induced enough sediment deposit to double the beach size over a two-year period.
The players
Coastal Assembly
An MIT-originated firm utilizing AI and satellite ocean data to engineer passive coastal erosion mitigation solutions.
JW Marriott Maldives Resort & Spa
A luxury resort property serving as the primary pilot site for the deployment of artificial reef coastal defense technology.
The details
Coastal Assembly designs these artificial reefs to influence local hydrodynamics, forcing ocean currents to slow down and deposit suspended sand particles. This creates a sand buffer that shields backshore areas from wave-driven erosion and flooding. The structures also serve as substrates for marine life, including coral and sea anemones, facilitating the development of a localized ecosystem.
Timeline
54 reef structures were placed at the resort site in 2024.
The beach expanded by 90 feet between 2024 and 2025.
The Tech Race
Coastal Assembly seeks to replace the energy-intensive and temporary standard of sand dredging with AI-optimized structural placement. The firm faces competition from traditional engineering firms and emerging marine habitat restoration startups currently deploying similar reef-based stabilization projects.
Coastal regions facing active erosion may benefit as these artificial reefs move from pilot sites to broader infrastructure projects. The technology is specifically designed for communities looking to reduce long-term coastline maintenance costs compared to recurrent sand nourishment operations.
The takeaway
Artificial reefs offer a path toward permanent, nature-inclusive erosion protection that avoids the pitfalls of dredging. Interested parties should watch for the company's application of this modeling to more high-energy wave environments following their initial success in the Maldives.
Further reading
Explore related developments in Environmental science.
Source note: This article includes information reported by The Week.
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Is it worth using man-made structures to try and restore eroding beaches in your area?
