The island measures approximately 3,300 square feet (306sq m) – or one-thirteenth of an acre. It is big enough to fit a tennis court.
That means it is about half the size of Bishop Rock, which Guinness Book of World Records said was once the world's smallest inhabited island.
But in 1982, the lighthouse on Bishop Rock, which lies just off the English Isles of Scilly, became automated, so there was no need for humans to man it.
That means it lost its status as an inhabited island.