Mississippi–Alabama barrier islands
... that the Mississippi–Alabama barrier islands have shrunken rapidly and drifted westward since first being mapped in the 1800s?
... that the <b id="mwA7U"><a href="./Mississippi–Alabama_barrier_islands" id="mwA7Y" rel="mw:WikiLink" title="Mississippi–Alabama barrier islands">Mississippi–Alabama barrier islands</a></b> have shrunken rapidly and drifted westward since first being mapped in the 1800s?