Non-GMO 100% Vegan Dietary Supplement Rhodymenia Palmata 375 mg Per Capsule Whole AlgaeLab VerifiedDiscussion: Red Marine Algae, also known as Dulse, is a type of seaweed that has been used as a food staple for thousands of years. Often referred to as a sea vegetable, research suggested that the sulfated polysaccharides in Red Marine Algae may provide nutritive support for immune health.