Eucheuma cottonii (sea moss or seabird's nest) Gracilaria (Irish moss or ogonori). Some products also contain the brown algae Fucus vesiculosus (commonly known as bladderwrack, black tang ...

Brian Lapointe, Ph.D., senior author and a research professor at FAU Harbor Branch, holding Gracilaria, a genus of red macroalgae, in Florida’s Indian River Lagoon.