Channel Islands Region: Two Distinct Groups

"Channel Islands" refers to two separate archipelagos:

1. British Crown Dependencies (English Channel): Jersey, Guernsey, Alderney, Sark, Herm—off Normandy, France.
2. Channel Islands of California (Pacific Ocean): Eight islands off Southern California: Anacapa, Santa Cruz, Santa Rosa, San Miguel, Santa Barbara, San Nicolas, Santa Catalina, San Clemente. Part of Channel Islands National Park.

Context determines which group is meant.