Underwater aboral views of four phenotypes (A–E) and color variants of phenotype I (F) of Diadema-sp, Diadema setosum (G), and Diadema savignyi (H). AKPM-NJL000036, original specimen number is AT2 designated as phenotype II BKPM-NJL000037, original specimen number is AT3 designated as phenotype III CKPM-NJL000039, original specimen number is AR59 designated as phenotype IV DKPM-NJL000038, original specimen No. is AR54 designated as phenotype V EKPM-NJL000040, original specimen No. is AR70 designated as phenotype V F color variant of phenotype I observed at Haida-ura in Mie Prefecture (Figure 1E) photographed by T. Ishikawa G Diadema setosum (DST2 in Chow et al. (2014)) H Diadema savignyi (DSV23 in Chow et al. (2014)).