The International Organization for Migration has announced that over one million migrants have entered Europe in 2015. Almost all came by sea, and four out of five arrived in Greece. The IOM said that the migration flow was the largest since World War II. Migrant fatalities for the region totaled to about 3,700, or about one half of one percent of the total number of arrivals. As only 5,100 migration deaths were recorded worldwide, the Mediterranean refugee routes are easily the world's most fatal.
