Granite Crab

The Granite Crab is a level 16 Summoning familiar. It is summoned using a Granite crab pouch, which will give you 0.2 Summoning experience. Apart from boosting your Fishing skill by 1 by interacting with it, it can also be used as a big net when fishing, and can store 1 Iron ore for you. It also has a special attack called Stony shell which can be activated if you have a Stony shell scroll in your inventory.