Tokyo, Japan - Missing: A tiny island in northern Japan. Or so authorities fear, prompting plans for a survey to determine if the outcrop has been washed away, ever-so-slightly shrinking the country's territorial waters.
The island, known as Esambe Hanakita Kojima was only officially surveyed and registered by Japan's coastguard in 1987, who couldn't even say exactly how big it was.
Until recently, it rose 1.4-metre (four-and-a-half feet) above sea level, and was visible from the very northern tip of Japan's northern Hokkaido island.
But now, it has disappeared.
"It is not impossible that tiny islands get weathered by the elements," a coastguard official told AFP.