Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Diadema savignyi (aboral) Description Aboral side: Traces of the blue ring in the apical system and of the blue lines along the median zones of the interambulacra are still visible (arrows). There are four tubercles in one horizontal series.Diameter of test 31 mm; Japan. Author von Noordenburg, Henk JPG file - 126.98 kB - 820 x 820 pixels added on 2005-02-23299 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 von Noordenburg, Henk Click here to return to the thumbnails overview