Records reveal the vast historical extent of European oyster reef ecosystems - Nature Sustainability

Abstract Anthropogenic activities have impacted marine ecosystems at extraordinary scales. Biogenic reef ecosystems built by the European flat oyster (Ostrea edulis) typically declined before scientific monitoring. The past form and extent of these habitats thus remains unknown, with such information potentially providing valuable perspectives for current management and policy.
Look at what we've lost. Clear waters and abundant wildlife. We could still get it all back though, if we act fast... Records reveal the vast historical extent of European oyster reef ecosystems.  https://www.nature.com/articles/s41893-024-01441-4 
‘Records reveal the vast historical extent of European (inc British) oyster reef ecosystems.’ These are nearly all gone now. Oysters play a vital role in cleansing the sea. Restoring them is one of the most important things we can do to rewild the sea.  https://www.nature.com/articles/s41893-024-01441-4