2. What is considered the heaviest crustacean in the world?

The heaviest crustacean in the world is the Japanese spider crab (Macrocheirus japonicus). It can grow up to 3.3 feet (1 meter) across and weigh up to 44 pounds (20 kilograms). This crustacean is native to the waters around Japan and is known for its large size and numerous legs, which can number up to 48.