Due to overfishing and recent environmental factors, Hokkaido, a region in Japan known for its sea urchins (locally known as "Ezo Bafun Uni"), is experiencing a severe shortage. As a result, the price for a bowl of sea urchin in restaurants has soared to over ¥20,000 (equivalent to approximately $180 USD), significantly impacting the sushi and seafood industry.

Seafood, particularly sea urchin, plays a crucial role in the Japanese culinary scene, with Ezo Bafun Uni considered one of the highest quality sea urchins in Japan. The shortage has not only affected businesses and restaurant profits but also the eating habits and customs of many Japanese people. The high cost of sea urchin might also reflect more extensive environmental issues, leading to a broader discussion about sustainable fishing practices.

In the U.S. and EU, overfishing and stock depletion are also recognized as significant issues. Various strategies, such as implementing fishing quotas and promoting sustainable fishing practices, are used to tackle these problems. A comparison could be made with Maine's lobster industry in the U.S., where prices have fluctuated due to changing supply and demand.