2. The largest crab in the world is the killer crab, the scientific name of which is Giant Crab Ganzi, which is from the bottom of the Pacific Northwest and is the largest crustacean in the world. Although it's called killer crab, this crab can't kill people-it's entirely the fault of the translator to call it a killer scorpion. Before it was known by China people, this crab had an English name DeadMan Crab, which was translated as a corpse-eating crab, which literally translated as a killer crab.

3. Emperor Crab, with a huge scientific name, commonly known as Australian Cancer and Australian Emperor Crab, is produced in Australia. It is the heaviest crab known at present, with an average weight of 4- 10 kg, rich in paste and fleshy, and is generally used for making soup or stir-frying. The simplest way is to cut the emperor crab into eight pieces, cook the clear soup directly, and then take out the crab meat and eat it.