The world's largest crab, called the killer crab, weighs a whopping 20 kilograms.

Killer crabs are strange creatures that live in the waters off the southeast coast of Japan. This crab is called "Gan's giant crabs (Macrocheira kaempferi)", is a kind of living in the Northwest Pacific Ocean seabed of the large spider crab, but also known to the world's largest existing crustacean, due to the scavenging and got a "Dead Man Crab It was given the common English name "Dead Man Crab" because of its scavenging, which led to the Chinese translation of it as Corpse Eating Crab, and was eventually rumored to be the "Killer Crab". It can't actually kill humans, but it specializes in fish, and even has a shark in its repertoire.