Source of Marine Polysaccharides Marine polysaccharides are primarily sourced from a diverse range of marine organisms that thrive in oceans and seas. Seaweeds are the primary and most abundant source of marine polysaccharides. Seaweeds with high polysaccharide content, such as red algae (Rhodophyta), brown algae (Phaeophyceae), and green algae (Chlorophyta), have been extensively...