Favia speciosa

Favia speciosa is a very common massive stony coral. It can also have contrasting color between the main coral surface and the large calices that contain the polyps. This rare specimen that is being farmed has probably the most exotic color combination that occurs in this species. The main surface of this coral is bright green while the calices are bright red. At night the calices can extend polyp tentacles out for an inch or two. As the calices expand during the day the coral becomes more red in coloration. When disturbed the calices retract and the green between the red calices is more visible.