Gunwharf Quays introduces thousands of oysters to the Solent to boost biodiversity

Friday, 10 April 2026 07:00

By Philip Keeler X @keeler_philip

Oyster introduction - CREDIT: UMPF

More than 2,000 oysters have been introduced into the Solent as part of a major environmental initiative aimed at improving water quality and boosting marine life.

Gunwharf Quays has confirmed that 2,200 European flat oysters have been installed in partnership with the Final Straw Foundation to help revitalise the local marine ecosystem.

The oysters act as natural water filters, removing excess nutrients and fine sediment as they feed. It is estimated the colony will filter around 440,000 litres of water each day, equating to around 160 million litres annually. This process improves water clarity, creating better conditions for marine plants and wildlife to thrive.

The project is also expected to support biodiversity. The oyster baskets provide shelter for smaller marine species, while the oysters themselves are expected to reproduce over time, helping to restore native populations. Established oyster reefs can also help protect coastlines from erosion.

Yvonne Clay, Centre Director at Gunwharf Quays, commented: “Sustainability is at the heart of our ethos here at Gunwharf Quays, and we recognise the vital role we must play in protecting our local environment. By hosting this initiative, we aim to lead by example and provide a blueprint for how organisations like our own can actively support and restore their surrounding habitats. We look forward to seeing this project flourish and witnessing the impact the oysters will have to the local marine environment.”

Hannah Cooper, Project Manager at Final Straw Foundation, added: “We're really excited to be partnering with Gunwharf Quays on this project. Native oysters are both a keystone species and ecosystem engineer, meaning they play a vital role in creating and supporting precious marine habitats and wildlife. The benefits from introducing this species at Gunwharf Quays will be felt across the Solent for years to come.”

The project will be monitored through ongoing water quality checks and oyster growth assessments, while also supporting education work with local schools and communities.

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