Drowned are an undead water mob but the game only sees them as undead.

This makes it so smite works on them but impaling does not.

This is frustrating for players living underwater and / or using a trident as a main weapon, as the trident does not deal bonus damage with impaling to drowned.

It would make logical sense for drowned to also be considered water mobs and would also give tridents another use case.

(This could also be fixed by reworking Impaling to do bonus damage when the player is in water)