Nematocytes (PubMed:23151943, PubMed:29424690). In late planulae, transcripts are found throughout the ectoderm in nematocytes, with high concentration of expressing cells in the oral pole (PubMed:29424690). In primary polyps, is expressed in nematocytes in the body wall and physa ectoderm and in the upper and lower pharynx (PubMed:29424690). Transcripts are expressed in gastrulae, early and late planulae, metamorphosing planulae, and primary polyps. Belongs to the NEP3 family. Lacks conserved residue(s) required for the propagation of feature annotation.