Zoochlorella
Zoochlorella is a nomen rejiciendum for a genus of green algae assigned to Chlorella. The term Zoochlorella is sometimes used to refer to any green algae that lives symbiotically within the body of a freshwater or marine invertebrate or protozoan. Zoochlorellae and zooxanthellae may both be found in the Pacific coast sea anemones Anthopleura elegantissima and Anthopleura xanthogrammica.
The analogy between Zoochlorella and chloroplasts has been used by the botanist Konstantin Mereschkowski in 1905 to argue about the symbiotic origin of chloroplasts.
Zoochlorellae are responsible for the greenish colour of sea anemone tentacles.
gains its green colour from Zoochlorella''
