Irish moss and sea moss are two names for the same red algae species (or Chandra's crisps, if you want to get formal about it). It is collected for its carrageenan, a substance added to milk products like ice cream to thicken them, but it is also sold raw and as a dietary supplement in the form of pills, powders, gels, and candies called sea moss suppliers. Website: https://www.tradekey.com/popular/sea-moss.html