Beachcombing is a fun leisure activity that the entire family can get into. Why not take the youngsters to Plage des Fours à Chaux to see what you can spy on the shoreline?
When you've finished at this stretch of coastline in Saint-Malo, why not make your way to St. Malo Citadel, St. Vincent Cathedral, and St. Malo Beach? They're not very far from Plage des Fours à Chaux and also a favorite with many tourists.