Secret of the Dolphins

From publisher blurb: Will You Discover the Legendary City of the Dolphins? You are a summer intern at the renowned Dolphin Institute in Hawaii, hoping to help find the fabled underwater city of the dolphins and make scientific history. As you're nearing the spot where the treasure-filled city is believed tolie, your group is approached by some boaters. When they press you for details about what you're doing, your suspicions are aroused. How much should you reveal?