| Summary: | FIGURE 11. a–f. Haliclona spongiosissima. a. general morphology, scale: 3 cm; b. oxea, scale: 55 µm, c. detail of the oscula and the screened surface in a fresh specimen, scale: 1mm, d. detail of the screened surface in a dried specimen, scale: 1mm, e–f. choanosomal skeleton, detail of the spicule's arrangements, scale: 200 µm; g–i. H. (Gellius) rudis, g. general morphology, scale: 2 cm, h. sigma, scale: 35 µm, i. oxea, scale: 160 µm; j–p. H. (G.) cf. cucurbitiformis, j. general morphology, scale: 3 cm, k. oxea, scale: 100 µm, l. sigmas, scale: 30 µm, m. macroscopic view of the choanosomal skeleton, scale: 1 mm, n. macroscopic view of the surface and the ectosome, scale: 1 mm, o. microscopic view of the spicule arrangement in the choanosomal skeleton, scale: 200 µm, p. detail of the choanosomal skeleton, scale: 200 µm. Published as part of Schejter, Laura, Cristobo, Javier & Ríos, Pilar, 2024, New records of demosponges (Porifera) from the South Orkney Islands (Antarctica) with a checklist for the region, pp. 401-430 in Zootaxa 5403 (4) on page 422, DOI:10.11646/zootaxa.5403.4.1, http://zenodo.org/record/10562154
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