Lithospermum is a subtropical gastropod shellfish. Its body is ovoid or ovoid, the adult body length is about 6.0cm, the body width is about 3.7cm, and the average weight is 14g. It is naked and shell-less, and its body surface is blue and gray with green and brown. There are many tumor-like and dendritic protrusions on it, and there are countless black back eyes. The back eye is very sensitive to light and looks like a toad or a lump. Lithospermum is widely distributed in the estuarine waters along the Indo-Pacific coast, but mainly distributed in the East China Sea and the South China Sea in China, with a large amount of resources.

Arnebia euchroma has high nutritional value and nourishing effect. In some coastal areas, it has been circulated among the people that Arnebia euchroma has the effects of treating asthma, helping digestion, eliminating fatigue and improving eyesight. Stewed with rock sugar, it is said that it has special effects on asthma and is often used as a tonic for postpartum pregnant women. People in Wenzhou, Longquan, Yancheng, Nantong, Fu 'an, Nanhui, Fujian, Shanghai and other places have the habit of eating fresh or dried lithospermum, which is regarded as a tonic and seafood treasure. Scald the fresh sulfanilamide with boiling water, peel off the leather skin of the mantle, cut it open from the abdomen, remove the internal organs, wash the mucus with salt or plant ash, shred the meat, and stir-fry it with seasoning to make various delicious dishes, which are deeply loved by the masses.

It can be stewed, braised or fried with thin flour, but it can't be cooked for too long.