Ulva intestinalis (Gutweed) is a species of chlorophytes in the family Ulvaceae. It is native to Rio Grande do Norte, Bahia, Ceará, São Paulo, Rio de Janeiro, and Rio Grande do Sul. It is a photoautotroph.
Definition: An aquatic biome that comprises systems of open-ocean and unprotected coastal habitats, characterized by exposure to wave action, tidal fluctuation, and ocean currents as well as systems that largely resemble these. Water in the marine biome is generally within the salinity range of seawater: 30 to 38 ppt.