FIGURE 30 in Calcareous sponges of the Western Indian Ocean and Red Sea

FIGURE 30. Ernstia arabica Voigt et al. 2017, ZMA Por. 13642, from Northern Red Sea, Egypt, Ras Mohammed, a, habitus in situ on the reef (photo M. Wunsch), b, light microscopic image of a detail of the cormus, c–e, SEM images of the spicules, c, triactines, d, tetractines, e, detail of apical actine of tetractine.Published as part of Van, Rob W.M. & De, Nicole J., 2018, Calcareous sponges of the Western Indian Ocean and Red Sea, pp. 1-160 in Zootaxa 4426 (1) on page 58, DOI: 10.11646/zootaxa.4426.1.1, http://zenodo.org/record/127123