I got a big colony of Zoas and there were 2 of these on the branch...a week later they were no longer on the branch but on a totally different rock. One of them split/grew another polyp. Are these a form of an anemone?
It is purple with green skirts. Within the purple it looks like fairy dust(white spots).
It is purple with green skirts. Within the purple it looks like fairy dust(white spots).