Off the coast of Belize, Gabe investigates reef records, sinkholes, and a diver's claim that carved stones lie where no library should exist. Marisol knows the water, the research station, and exactly how quickly visitors become dangerous when they think every mystery is treasure. A reef Crossing reveals a record that can be read only through coral pattern, current, and breath. To understand it, the children must work with the sea rather than against it - and leave behind anything they have no right to take. When a clue surfaces that the triplets are not ready to discuss, trust inside the family becomes part of the adventure.
