A pale to dark green seaweed, which has no midrib. It has wavy edges and translucent green fronds. Length 40cm.
The Sea Lettuce is tolerant of most conditions, except extreme exposure. It is found throughout the intertidal zone on rocky shores, estuaries, and free-floating. It may also be discovered attached to rocks or stones in rockpools. A common and widespread species.
Photographs taken June 2012, Llandudno, Wales, and August 2015, Meadfoot Beach, Torquay, Devon.