Ocean Nutrition Red Marine AlgaeOcean Nutrition Seaweed Select Red Marine Algae is a 100% digestible, optimal food source and color enhancer for marine fish with smaller mouth parts. This natural dried seaweed (macroalgae) is a beneficial, nutritious supplement for all types of grazing fish. Natural dried seaweeds (macroalgae) Nutritious supplement for all grazing fish Premium quality marine algae Red Marine Algaes nutrition is not bound up in cellulose as it is in the cells of land