... are geologically part of the Channel Islands, but have remained under French jurisdiction.
Roches–Douvres is a dangerous reef, between the islands of Brehat and Guernsey, about 30 kilometres (19 miles) off the French coast. It is completely covered at high tide, but exposed at low tide. It has a lighthouse, which is claimed to be further from the mainland than any other lighthouse in Europe.
Chausey is a group of small islands and rocks, to the south of the (political) Channel Islands 17 kilometres (11 miles) off the Normandy coast. In 1999 it had a population of 30.
© Haydn Thompson 2017