A groundbreaking documentary, City of Shells: Our Forgotten Oyster Reefs (香江遺礁), sheds light on the lost marine habitat and the urgent efforts to restore Through historical research and scientific exploration, the documentary unveils how oysters shaped the Pearl River Delta’s development—diving delving deeper into the socio-cultural ties between oysters and coastal communities, the lime industry that fueled early infrastructure across the region, and the thriving marine ecosystems that once flourished beneath its waters.