Crab shell meal is mainly used as an organic fertilizer, a natural source for calcium and magnesium which also helps in certain fungus problems. Crab shell meal is made from waste of crabs. The process includes cooking, dewatering, drying etc. Various minerals are contained in crab shell meal such as Calcium, Phosphorus, Magnesium, Sodium, Potassium, Manganese, Copper, Zinc, Iron, Cobalt, and Selenium. China and Japan are the largest consumers of crab shell meal.
Though not classified as dangerous goods a recent fire in one of the container has prompted U.K. P&I Club to issue warning to handle, stow and ship crab shell meal with similar requirements of carrying Fishmeal under UN Number 2216.