Coral bolts

Coral bolts are ammunition for the Coral crossbow. They can be recieved as a drop from Young grotworms on the first floor of the dungeon visited in Song from the Depths. These are the only bolts that can be used with a Coral crossbow, they cannot be used with any other crossbow. They will have a special unknown effect on the Queen Black Dragon.

Trivia

 * Despite being called bolts and used with a crossbow, they resemble arrows more than bolts. They also apparently are not feathered unlike most arrows or bolts.