1. Lobsters are cold-blooded animals, and their blood is generally light gray. Green blood belongs to insects, red blood belongs to warm-blooded animals, and rare light gray blood belongs to aquatic animals, such as shrimp and crab.

2. Lobster family includes 1 1 genus: Panulirus, Jasus, Justitia, Linuparus and Nupalirus.

3. There are about 46 species of hairy lobsters, real lobsters, blunt lobsters, protolobsters, Platts lobsters and Tasmanian lobsters.

Lobster has a thick head and chest, a hard shell, bright colors, a short abdomen, a body length of 20-40 cm and a weight of 0.5 kg, which is the largest type of shrimp.