👉 Zooxanthella is a genus of bacteria in the class Bacteroidetes. It belongs to the order Proteobacteria and is one of the largest phyla on Earth, containing over 30,000 species. Zooxanthellae are unicellular organisms that primarily inhabit aquatic environments, particularly in saltwater. They are characterized by their unique stipe-like structure, which allows them to form colonies and secrete pigments. Zoaxanthella is a type of