Respuesta :
Green crabs cannot break the shells of older oysters however that can eat younger oysters and will eat clams and crabs the same size as them.
The adult green crab is very hardy and can survive out of the water for five or more days. Adult green crab is an aggressive crab and a dominant predator. It consumes many shellfish species such as clams, mussels, oysters, smaller crabs and other crustaceans and even small fish.