What are some popular beach towns near Calais for camping or caravan parks?

Stretching south of Calais, the Opal Coast runs all the way south to Berck. Check into a seaside campsite or caravan park in the beach towns of Boulogne-sur-Mer, Le Touquet, or Wimereux; enjoy sweeping coastal hikes along the cliffs of the Cap Blanc-Nez and Cap Gris-Nez, or escape inland to the hills and marshlands of the Marais d’Opale Regional Natural Park. You can also explore different options for camping near Calais on Hipcamp.