https://upload.wikimedia.org/wikipedia/commons/a/aa/Pacific_Culture_Areas.png800 square kilometers. Kiribati is well known all over the world for its amazing scuba diving and fishing. The biggest atoll (and certainly one of the largest on this planet) is Kiritimati (or Xmas) Atoll , it's got a land location of a hundred and fifty sq. miles (388 sq.