Sea Lettuce - Ulva lactuca

Maximum length: 8-15 cm.
Appearance: Wide, tough, green sheets attached to stones with a holdfast
Depth: Upper, middle and lower shore.
Feeding: Sea lettuce is a producer. It makes its own food by photosynthesis. It has chlorophyll just like most land plants.
Environment: Sea lettuce grows on gravel and rocky bottoms. It is found right down the shore. It can survive in rock pools high up on the shore that do not get fresh water every tide.
Other facts: Sea lettuce is edible! It is an annual. This means that it grows, reproduces and then dies in a season.
Classification: Sea lettuce is a member of the protoctista group green algae.