Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Strongylocentrotus nudus (test, aboral) Description Aboral side: The primary tubercles are distinctly larger than the secondaries.Diameter 71 mm; Chiba Peninsula, Japan. Author Schultz, Heinke JPG file - 217.62 kB - 945 x 934 pixels added on 2005-02-23377 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke Click here to return to the thumbnails overview