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Diadema savignyi (apical system)
Description Apical system: The blue ring in the apical system of the living animal remains as a dark line on the bare test (arrows), when the skin is still preserved. In bleached tests it is faintly visible as fine, depressed, bowed groove.Scale 2 mm. JPG file - 122.47 kB - 629 x 683 pixels added on 2005-02-23268 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke
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