A weapon of this type enables its wielder to determine the location, depth, kind, and number of aquatic predators within 680 feet. A trident of warning must be grasped and pointed in order for the character using it to gain such information, and it requires 1 round to scan a hemisphere with a radius of 680 feet. The weapon is otherwise a +2 trident.

Prerequisites: Craft Magic Arms and Armor, locate creature.
Cost to Create: 5,000 gp (plus 115 gp for base item), 400 XP, 10 days.