Excludes landlocked countries. Includes dependencies and overseas territories.
Extra explanation: The distance in column 3 represents the length of the coastline one person would own, if the coastline of a country was to be evenly divided over the population of that country. E.g. for the entire world, this would mean 356000 km of coastline, divided over 7 billion people. This would result in an average length of 5.1 cm of coastline.