I don't see why everyone condemn Coral Arrows. Red Coral outdoes every other in terms of damage so long as the enemy isn't crazy resistant to Water or anything like that. It's not like you are losing any damage because of the water damage. I have no idea where that misconception came from. It says 70% Projectile 30% Water. It's still 100% damage so you aren't losing anything. Just don't use them against Water-strong enemies.