I visited in Summer 2011 and could admire this WHS in low and high tide. I saw Puccini's Madamme Butterfly en plein air just in front of the WHS and it was truly an unforgettable experience. I explored the rocky tidal island with a tiny population of only 44 people. In the morning when the tide retreated I walked all the way the to Channel Islands following some tourist groups from afar to be sure to avoid the quick sand zones. It is certainly one of the most beautiful WHS France has to offer.