Unlike other algae, sea moss gel is a thorny sea vegetable. Like many types of algae, sea moss can have health benefits. It can also be used to provide antioxidants and minerals, but carrageenan is the most important ingredient. Sea Moss Gel Online can be added to food, taken as a dietary supplement, or dried, mashed, or made into a gel. Since sea moss contains iodine, people with thyroid problems should consult their doctor before taking it.