I don’t think anyone expected Skull and Bones to exclude fishing from the gameplay. Skull and Bones will inevitably lead you into fishing, whether you like it or not. Here’s how to fish in Skull and Bones with your spear.
How to Kill the Shark and Crocodile in Skull and Bones
While sailing about in the ocean between your first tasks, you will inevitably get attacked by a shark. Don’t be scared; it won’t (immediately) devour you, your ship, and your crewmates. It’s rather easy to deal with a shark.