Phantom islands are islands that are believed to exist and appear on maps for a period of time (sometimes centuries), and they are removed after they are proven not to exist (or the general population stops believing that they exist).
... from 25 to 44, 26.9% from 45 to 64, and 13.5% who are 65 years of age or older. The median age is 40 years. For every 100 females there are 102.1 males. For every 100 ...