FIGURE 5. Normal and aberrant polyps of Tridentisis candelabrum colonies. A. in situ image of expanded polyps with projecting inter-tentacular needles, semi-transparent tissue, and red color associated with oral opening (Mariana Trench Marine National Monument, Pacific Ocean, 1847 m depth, EX1605L3 Dive 19). B. microscope image of preserved paratype colony MOL101-1 showing inter-tentacular needles and semi-transparent tissue in the basal part of the polyp. C. in situ image of part of the colony CAT 206-1; the widely space branches and sparse polyps are evident. D. microscope image of a section of the most lateral vertical branch; the polyps are poorly developed with only the large needle sclerites being evident.

Published as part of France, Scott C. & Watling, Les, 2024, Toward a revision of the bamboo corals: Part 6, Illuminating a new candelabrum genus (Octocorallia: Keratoisididae), pp. 505-519 in Zootaxa 5497 (4) on page 514, DOI: 10.11646/zootaxa.5497.4.3, http://zenodo.org/record/13618944