産さん卵らん回かい遊ゆうさんらんかいゆうMeanings1nounspawning migrationBiological term for the seasonal movement of fish or other aquatic animals to spawning grounds.サケは産さん卵らん回かい遊ゆうのために川かわを遡さかのぼる。Salmon swim up rivers for spawning migration.
