Neutral Sharks

I know that you won't add sharks because you won't add non fictional hostile mobs, but in real life, sharks mostly only attack when they smell your blood. So what if when you get hit, if there's a shark nearby it starks attacking. But when your regenerates to the level it was at before you got hit or higher, it leaves you alone.

It can drop shark teeth, which you can use to craft spears or a shark tooth necklace, which will let you not get attacked by sharks.

The spear has a longer throw range than the trident and deals more damage.