Chondrus Crispus, or Irish Moss, is an edible red seaweed. While both offer similar benefits, Irish Moss and Sea Moss are not the same. Sea Moss is a thicker more stick-like seaweed. Irish moss, scientifically known as Chondrus Crispus, is a seaweed with flat fan-resembling leaves. You can even eat it like it's salad, and here's a dressing you can make for it! | Daddybutter The Brand