The group of Arad has taken up the challenge of exploiting the potential of the sulfated polysaccharides of red microalgae for biotechnological applications. To this end, they are conducting an integrated investigation, which initially involved chemical, physiological, and biochemical studies of the polysaccharide and the development of large-scale production technologies. However, as the group became more and more familiar with the subject, it became clear that the sulfated polysaccharides that characterize the red microalgae comprise a unique and very complex group of molecules and that biotechnology development would be correspondingly complex.