The Biggest Crab in the World, Plus 8 Enormous Contenders

The giant mud crab (Scylla serrata) is a crab species native to the Indo-Pacific region, commonly living in mangrove forests, estuaries and shallow coastal waters.

This Indo-Pacific mud crab can have a carapace width of up to 11 inches (28 cm) and weigh over 11 pounds (5 kg). Its coloration varies from dark brown to greenish-gray.

Capable of growing to large sizes and known for its delicious meat, the giant mud crab is a prized catch in many Asian countries. They have a robust, oval-shaped carapace and powerful claws that they use for defense and capturing prey.

These crabs are omnivorous, feeding on a variety of prey, including small fish, mollusks, other crustaceans and ocean detritus.