Worldwide, 7 million tons of biowaste are produced by the seafood industry
every year.  Nevertheless, shellfish culture – such as mussels, oysters and
clams – is considered an optimal environmentally sustainable form of
aquaculture. It has minimal ecological impact compared to other seafood
production systems. Today large amounts of biowaste from shells is
limiting the development the shellfish industry in certain regions by
posing major financial and operational burdens on the sector.
A stunning 75% to 90% of the total weight of shellfish production
consists of biomaterial from shells. France alone produces more than
200 000 tons of shellfish a year. Large quantities of shell waste are
discarded on landfills, amounting to substantial transportation costs and
GHG emissions. In developing countries, shell waste is often disposed in the
sea, causing environmental contamination and posing a risk for public health.

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