Lobster is the general name of lobsters in the phylum Lepidoptera. Also known as prawns, leading shrimps, shrimps, sea shrimps, etc. Its head and chest are thick, its shell is hard and colorful, its abdomen is short, its body length is generally between 20-40 cm and its weight is about 0.5 kg. Some of them have no claws, and the next day their abdomen and limbs can be transformed into claws. The heaviest can reach more than 5 kilograms, and it is called lobster tiger. The body is thick and cylindrical, the back and abdomen are slightly flat, the head and breastplate are developed, thick and prickly, there are a pair of powerful supraocular spines in the center of the front edge, and there is a closed gill chamber. Mainly distributed in tropical waters, it is a precious seafood.