The appearance of Northern sea urchin (Kitamurasaki uni)
Common name: Northern sea urchin
Japanese name: Kitamurasaki uni (北紫海胆、北紫雲丹、北紫海栗)
Scientific name: Strongylocentrotus nudus (A.Agassiz, 1864)
Nigiri sushi detail: Northern sea urchin (Kitamurasaki uni) Nigiri sushi
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