The appearance of Purple sea urchin (Murasaki uni)
Common name: Purple sea urchin
Japanese name: Murasaki uni (紫海栗、紫海胆、紫雲丹)
Scientific name: Anthocidaris crassispina (A.Agassiz, 1864)
Nigiri sushi detail: Purple sea urchin (Murasaki uni) Nigiri sushi
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