Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Hygrosoma hoplacantha (aboral) Description Aboral side: The apical system is small with an enlarged madreporite.Diameter 132 mm; Pemba Strait, East Africa.ZMUH Author Schultz, Heinke JPG file - 231.37 kB - 1 072 x 1 059 pixels added on 2011-02-23237 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Schultz, Heinke Click here to return to the thumbnails overview