Assassin's Creed Odyssey: Shark Hunter on Nightmare Difficulty

I have been enjoying Assassin's Creed Odyssey a lot so far. It stands apart from the previous installations I have played in many ways - the amount of underwater exploration there is took me by surprise in particular. I wanted to make this video to illustrate the easiest way to kill the sharks that you will inevitably encounter during these diving expeditions (this is for Nightmare difficulty - have not tried other difficulty settings yet). Hope this is helpful for any new players struggling with underwater combat and evasion!