noun
sea-run variety; anadromous type
Technical term in fisheries biology for fish that migrate from freshwater to the sea, such as certain salmonids. Contrasts with 陸封型 (landlocked type).
サクラマスには降海型と陸封型が存在する。
Cherry salmon have both a sea-run variety and a landlocked variety.
降海型の個体は海で大きく成長する。
Individuals of the sea-run type grow large in the ocean.