FIGURE 22 in Shallow-water black corals (Cnidaria: Anthozoa: Hexacorallia: Antipatharia) from SW Madagascar

FIGURE 22. Stichopathes cf. diversa (Brook, 1889). (a–b) In situ pictures of the white (INV.131375) and brown (INV.131377) phenotypes. (c) Close-up view of the sagittally compressed polyps, which are found on the outer side of the coils. (d) SEM view of a 2.1 mm in diameter skeleton of an apical coil (INV.131375). The size difference between polypar spines (the outer ones) and abpolypar spines (the inner ones) is clear. (e–f) Blunt, conical polypar spines showing the variability between papillose and tuberculated surfaces and small tubercles at the tip. Small triangular, secondary spines can be seen all around. (g–h) Variability in abpolypar spines that can be sub-triangular or cylindrical, always showing a papillose surface. Small secondary, triangular spines are seen all around as well.