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purple sea urchin, strongylocentrotus purpuratus, science, echinodermata, echinoidea, echinoida, strongylocentroidae, echinoderm, sea urchin
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#purple sea urchin
#strongylocentrotus purpuratus
#science
#echinodermata
#echinoidea
#echinoida
#strongylocentroidae
#echinoderm
#sea urchin
