Research on marine polysaccharide-based nanomaterials is emerging in nanobiotechnological fields suchas drug delivery, gene delivery, tissue engineering, cancer therapy, wound dressing, biosensors, and watertreatment. Important properties of the marine polysaccharides include biocompatibility, biodegradabil-ity, nontoxicity, low cost, and abundance. Most of the marine polysaccharides are derived from naturalsources such as fucoidan, alginates, carrageenan, agarose, porphyran,