Hokkaido's marine ingredient story
Hokkaido lands roughly a million tonnes of seafood annually — predominantly walleye pollock (suketoudara), salmon, scallop, kombu, and other northern-cold-water species [1]. Beyond food consumption, this volume supports a substantial marine ingredient processing industry: fish-skin and bone collagen extraction, scallop-shell calcium powder, kombu-derived alginate and fucoidan, salmon roe oil. The cold-water provenance is a marketing asset: 'Hokkaido marine collagen' is a defensible regional positioning vs generic 'marine collagen' from undifferentiated Pacific or Atlantic sources.
Sources: [1]