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Solar-powered floating islands could help to regrow coral reefs

A trio of hexagonal islands could generate solar electricity to power a process that accelerates coral growth, with space for a research lab and a garden

By Madeleine Cuff

21 May 2024

Corals growing on a Biorock reef restoration structure in Indonesia

MATTHEW OLDFIELD/SCIENCE PHOTO LIBRARY

A cluster of floating, solar-powered islands could be used to support coral reef restoration efforts in coastal waters, a team of researchers has proposed.

It is possible to accelerate the recovery of damaged corals, or the growth of new coral colonies, by pumping an electrical current through seawater. This prompts minerals dissolved in the seawater to crystallise on structures, forming limestone rock that is the perfect habitat for young corals.

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