Twins André and Lucas love working at Cavendish Beach on Prince Edward Island--helping their Park Warden mother, lobster fishing with their grandfather and collecting seaweed with Mr. Arsenault and his horse, Thunder. But when Thunder is badly hurt by a mysterious object in the ocean, the boys know they need to turn to another passion of theirs--solving mysteries. With Lucas's brain and André's courage, the boys always solve their cases, and now they have their eye on hostile Mr. Prune. Water Hazardis the second title in Hélène Boudreau's Red Dune Adventure series.