noun
calcareous algae
Biology term for algae that deposit calcium carbonate, such as coralline algae.
石灰藻はサンゴ礁の形成に重要な役割を果たす。
Calcareous algae play an important role in the formation of coral reefs.
Compound of 石灰 (sekkai, 'lime, calcium carbonate') and 藻 (sō, 'algae').