Strongylocentrotus nudus

Strongylocentrotus nudus is native to the northwestern Pacific, specifically inhabiting the rocky coastal waters of East Asia. It is commonly found along the coastlines of Japan, Korea, and parts of Russia. It thrives in cold-water marine environments.

This species of sea urchin feeds largely by grazing on algae and other organic materials attached to the seabed. By consuming kelp and other marine vegetation, it plays a vital role in maintaining the balance of its coastal ecosystem. Large populations can significantly alter kelp forest densities.

Yes, like other edible sea urchins, Strongylocentrotus nudus is harvested for its gonads, which are widely known as uni in Japanese cuisine. It is considered a culinary delicacy and is often consumed raw in sushi. Harvesting this species is a major commercial fishery in East Asia.

It belongs to the family Strongylocentrotidae and shares its coastal habitats with similar commercial species like the closely related Strongylocentrotus intermedius. Both are heavily farmed and fished in East Asia to supply the seafood industry. Their similar appearances often lead to them being processed together.