- a British island group in the English Channel, near the coast of France, consisting of Alderney, Guernsey, Jersey, and smaller islands. 76 square miles (198 square kilometers).
- an island group off southern California’s Pacific coast, along the channel just south of Santa Barbara: an eight-island archipelago used for U.S. military training and testing, and noted for numerous endemic species and ecological diversity. 351 square miles (909 square kilometers).
- a group of islands in the English Channel, off the NW coast of France, consisting of Jersey, Guernsey, Alderney, Brechou or Brecqhou, Sark, Herm, Jethou, and Lihou (all between them representing the United Kingdom Crown Dependencies of the Bailiwick of Jersey and the Bailiwick of Guernsey) - the only part of the duchy of Normandy remaining to Britain - and the Roches Douvres and the Îles Chausey (which belong to France). Pop: 149 878 (2001). Area: 194 sq km (75 sq miles)
