Sea urchin is more expensive than crab roe. Good quality sea urchins can be sold to 400 yuan for a catty.

People eat sea urchins, mainly sea urchin "eggs" (sea urchin yellow), which is the "gonad" of sea urchins. Only accounts for about 10% of the total weight of sea urchins. On the one hand, the quantity is pitiful, and it can only be caught by artificial diving, which is costly. Secondly, its preservation is a problem and it can only be eaten immediately.