Sea cucumber spots are pure natural wild and rare deep-sea cold-water fish species. The skin of fish resembles that of sea cucumbers. The skin of the whole body accounts for one-third of the weight of the fish because it has grown in extremely cold areas for many years. It is rich in protein and its nutritional value is not inferior to that of sea cucumbers from the same region. Sea cucumber spot sand removal is actually to remove sand and phosphorus from its body. Soak the sea cucumber spots in cold water for 5-7 minutes. Melt the ice coating on the surface of the fish body and keep it stiff. Lift the fish tail into an inclined plane and pour boiling water on both sides of the fish body. Put the blanched fish in Rinse it in cold water and gently remove the sand phosphorus with your hands. If some sand phosphorus is not completely removed, just scrape it off with a knife.