Dog Key Island

It has been reported as an island occasionally — in the mid-19th century and the early 20th — while at other times it was submerged.

[3]: 8  Several smaller shoals grew together into one larger island around the beginning of the 20th century, appearing on a 1917 map from the United States Coast and Geodetic Survey.

[4]: 7–8  As it stood partly off the territorial waters border of the United States, it was at times used for businesses illegal in Mississippi.

[5] The place was very popular, but after continued natural erosion and a hurricane that diminished the sandy island, in 1932 it was abandoned.

[6] It lends its name to the Isle of Capri Casinos chain, the first of which was set in Biloxi.