Seascape‑Scale Restoration Gains Momentum to Revive Marine Biodiversity

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Researchers are now calling for a shift in how marine habitat restoration is approached, advocating for seascape‑scale initiatives that recognise coastal ecosystems as interconnected networks rather than isolated features. A study led by the University of Portsmouth, with input from the Zoological Society of London and the University of Edinburgh, presents compelling evidence that oyster reefs, kelp forests, saltmarshes and seagrass meadows operate in close ecological synergy a fact often overlooked by current policy and restoration efforts. The findings make a strong case for restoring entire seascapes to bolster ecosystem resilience and deliver critical benefits for both climate and biodiversity targets. The study highlights global examples, such as enhanced seagrass growth near oyster reefs in California, nutrient filtration by oyster beds in Chesapeake Bay, and kelp-derived carbon supporting fish populations in New Zealand. Coupled with the shocking statistic that the UK has lost up to 95% of its oyster reefs and 90% of seagrasses, the report underlines the urgency of adopting integrated restoration frameworks. Recommended actions include revising marine protected area frameworks, updating environmental assessments, and aligning restoration goals across land–sea boundaries. The research was unveiled at the International Seascape Symposium II held at the Zoological Society of London in mid‑2025.

What this means:
Seascape‑scale restoration represents a major step change in how the UK could protect and restore its marine ecosystems moving away from piecemeal interventions toward holistic strategies. By recognising the interdependence of coastal habitats, policymakers and environmental practitioners have an opportunity to restore biodiversity, enhance coastal protection, improve water quality, and revive fish stocks simultaneously. This approach aligns with the UK’s broader net‑zero and nature recovery commitments, offering multiple benefits for climate resilience, ecosystem services, and marine wildlife.

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