sea lettuce

Noun

• Any of several edible seaweeds of the genus Ulva.
• Similar seaweed species of other genera:
• Scaevola taccada (species), also known as the beach cabbage, a terrestrial flowering plant species that is native to coastal regions of the Indo-Pacific.
• Dudleya caespitosa (species), also known as the sand lettuce, a terrestrial flowering plant species that is endemic to coastal areas of California