Fig. 2. Siderastrea stellata Verrill, 1868 colonies healthy conditions (a), bleached (b), white plague disease (c), and colonies with pigmentation pattern altered (PPA) (d). And their respective histological sections, stained in H & E: a.1, healthy body wall epithelial layers; b.1, body wall with gastrodermis and mucus laden calicodermis, black arrow pointing to necrosis of gastrodermis, and red arrow pointing to mucocytes promote hyperplasia of the mesoglea; c.1, epithelium disrupted and presence of many mucocytes (black arrow), and focal vacuolation of gastrodermis (red arrow); d.1, basal body wall with calicodermis, and necrosis of eternal epithelium (black arrow).