Kina: Evechinus chloroticus (Valenciennes, 1846) is a sea urchin species endemic to New Zealand and the country’s most commonly encountered sea urchin. It is widely distributed along the coasts of both the North and South Islands, inhabiting shallow rocky reefs and kelp-rich coastal waters.
The species can reach a test diameter of approximately 16–17 cm and is characterized by its dark green to brown test covered with relatively short spines. Kina plays an important ecological role in New Zealand’s coastal ecosystems, where it feeds primarily on seaweeds and kelp.
The edible portion is the gonad, commonly known as uni, which has been an important part of Māori cuisine for centuries. Today, kina remains a prized seafood in New Zealand and is harvested on a commercial scale. However, it is less familiar to consumers in Japan than traditional Japanese sea urchin species.
Kina roe is typically orange to deep orange in color and is known for its rich, creamy texture and intense marine flavor. Compared with Japanese favorites such as Ezobafun Uni (Mesocentrotus intermedius) and Murasaki Uni (Heliocidaris crassispina), kina often exhibits a stronger seaweed character and a noticeable bitterness, giving it a distinctive taste profile that can divide opinions among uni enthusiasts.
In sushi restaurants, kina is often served as gunkan-maki (battleship-style sushi) or in hand rolls, where its bold flavor and creamy consistency can be fully appreciated. In recent years, improvements in feeding and post-harvest conditioning techniques have helped enhance roe quality and reduce bitterness, increasing interest in the species for premium seafood markets.
Although limited quantities have occasionally been exported to Japan, kina remains relatively uncommon in the Japanese sushi market.
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