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20 storm-resistant oyster reef cubes deployed in the North Sea to restore native oyster populations and improve water quality.
Twenty storm-resistant concrete-like oyster reef cubes, made from six tonnes of seawater-resistant Marine Crete, have been deployed in the North Sea off Tyne and Wear to restore native European oyster populations.
The project, led by the Zoological Society of London and Groundwork, aims to rebuild oyster reefs lost over a century ago due to overfishing, pollution, and disease.
Each cube, engraved with natural textures and portholes for marine shelter, supports 4,000 adult oysters and over 35,000 juvenile oysters attached to 40 tonnes of repurposed scallop shells.
The effort follows a 2023 deployment disrupted by storms, prompting the use of more resilient structures.
Over 190 volunteers helped prepare and attach oysters before the reef cubes were lowered 1.8km offshore.
The five-year initiative seeks to improve coastal water quality—each oyster filters up to 200 litres of water daily—and boost biodiversity.
20 cubos de arrecifes de ostras resistentes a las tormentas desplegados en el Mar del Norte para restaurar las poblaciones de ostras autóctonas y mejorar la calidad del agua.