Apparently, there’s a chain of tiny shoals between a small Indian island to the northwest and a small Sri Lankan island to the southeast which the maritime border pass through, and the border crosses one of those shoals (the 9th one) in the middle. Which means India and Sri Lanka technically have a 45 meter border. It shouldn’t count though for quizzes, as longer small borders on islands such as Canada-Denmark on Hans Island and France-Netherlands on Saint Martin doesn’t count on Jetpunk.