Marginal tentacle and marginal projection appearance of Phymanthus pinnulatus A close-up of ramified protuberances of a living specimen. Photograph by NWL Yap B close-up of protuberances from a fixed specimen (ZRC.CNI.1345); note that finer details of protuberance branching are lost in preserved/fixed specimens, branching of protuberances now appear as knobs. Photograph by NWL Yap C a morphotype of that lacks ramified protuberances. Note that this individual (ZRC.CNI.1029) is atypical as it has lesser marginal tentacles, by which are also octo-ramously arranged. Photograph by NWL Yap. D a “smooth” tentacle morphotype, in situ. Photograph by R Tan E close-up of a marginal tentacle tip from a fixed specimen (ZRC.CNI.1342). Note absence of perforation at tip F close-up of a row of marginal projections of a fixed specimen (ZRC.CNI.1342). Note perforations (arrowed). Abbreviations: mt, marginal tentacles; mtt, marginal tentacle tip; p, protuberances. Photographs by NWL Yap.