Two main types of culture are carried out - seabed culture and suspended culture. No supplementary feed is provided, and no medicines or chemicals are administered during grow-out. The industry is still reliant on the collection of wild mussel seed (called ‘spat’) for on-growing.
Global production in 2018 equated to 2.1 million tonnes. China produced almost half of this volume, whilst other important producing countries included Chile and Spain.