Chondrus crispus, commonly known as Irish moss, is a type of red algae found along the rocky coasts of the Atlantic Ocean. It thrives in cold waters and is often harvested for its carrageenan, a substance used as a thickening agent in various food products, cosmetics, and pharmaceuticals. This algae has a distinctive appearance, featuring flat, branching fronds that can range in color from greenish to deep red or purple. Chondrus crispus is not only valued for its commercial uses but also has a long history of being consumed as a nutritious food source, rich in vitamins and minerals.