Echinometra mathaei 梅氏長海膽 aboral view
Echinometra mathaei 梅氏長海膽 apical system view
Echinometra mathaei 梅氏長海膽 oral view
Echinometra mathaei 梅氏長海膽 aboral view, close-up
Echinometra mathaei 梅氏長海膽 lateral view. the following photo are photo at various ortational degree .
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