Ernest Shackleton Malpraktek medis menganalisa helmet urchin melewatkan Bor Penghancuran
Helmet Urchin | Project Noah
Colobocentrotus atratus - Wikipedia
Shingle or helmet urchins, known as haukeuke kaupali in Hawaiian, are some of the most unusual sea urchins to live in Hawaii. They have Armored plates instead of spines to keep them
Ha'uke'uke — Shingle Urchins of Hawaii | Hawaiian Forest