Class Ulvophyceae, also known as the green seaweed, encompasses a diverse group of organisms that includes over 1,000 species. Some common synonyms for this class of seaweed include the Chlorophyta, Chlorophyceae, or simply green algae. These synonyms highlight the class's characteristics, including its green coloration, which is due to the presence of chlorophyll. The Ulvophyceae can be found in marine and freshwater environments and can form complex colonies or grow as solitary organisms. Some notable members of this class include sea lettuce, Ulva lactuca, and Cladophora. As important primary producers, Ulvophyceae play a vital role in aquatic food webs and ecosystem health.