(Fig. 2 N–P)
Sertularella spiralis — Totton, 1930: 197, fig. 44 B–D, pl. 1 fig. 7, pl. 3 fig. 5.
Material examined. Stn. RAS — 19.ii. 2010, Ant.02/ 2010 (43 m): two stems, 6 and 12 cm high, respectively, the former is sterile, the latter bears numerous male gonothecae, both on bryozoan host (MHNG-INVE- 79791); Ant.04/ 2010 (43 m): several stems ca. 9 cm high, some bearing male gonothecae, on bryozoan (MHNG-INVE- 79792); Ant. 11 / 2010 (43 m): colony composed of several stems, up to 9 cm high, richly bearing male gonothecae (MHNG-INVE- 79790).
Remarks. For a description of this species, we refer to Totton (1930).
Geographical distribution. See Peña Cantero, Svoboda & Vervoort (1999).