Iron is present in seaweed at higher levels than in many well-known terrestrial sources of minerals, such as meats and spinach. There is more iron in an 8g serving of Dulse (palmaria palmate) than in 100g of raw sirloin steak.
Iron is an essential mineral and part of all body cells. It does many things in our bodies, most importantly iron (as part of the protein hemoglobin) carries oxygen from our lungs throughout our bodies. Iron also helps our muscles store and use oxygen. Without iron we become physically and mentally fatigued.
(research taken from Royal Society of Chemistry; 1993, Institut de Phytonutrition 2004)