Swanson Sea Minerals: Red Marine Algae features Aquamin®, a complete mineral complex produced from specially harvested red marine algae found off the coast of Ireland. A unique plant-derived material, Aquamin comes from the Lithothamnium species of seaweed, which is a rare and unique type of red algae. It's a unique source of minerals which possess the open, porous physical structure of the seaweed from which they come. Inert and mineral rich, Aquamin delivers calcium, magnesium and over 70 other important trace minerals. The combination of trace minerals and calcium together enhances the rate at which calcium absorption takes place in humans and also contributes to bone health. Also known as Lithothamnion corallioides and red seaweed.