The number of illegal immigrants in the Greek island of Lesvos coming from the northern sea borders between Greece and Turkey was increased by 550% during the March-April 2015 period compared to the same period last year. According to official data from the National Coordination Center for Border Control, Immigration and Asylum released by the Greek Interior Ministry, 8,735 illegal immigrants from third world countries were arrested by Greek port authorities in Lesvos during the March-April 2015 period compared to the 1,345 immigrants during the same period last year. As for Samos, illegal immigrants’ arrests were increased by 534.21%, reaching 2,410, when a year ago they were just 380. In addition, 18,456 illegal immigrants travelled to the islands of the northeastern Aegean and the Dodecanese during the first two months of spring, with the increase of those arriving from the sea routes increased by 469%. Τhe migration flow from the Evros river border in northern Greece during the first months of 2015 was about 869 illegal migrants compared to the 445 people arrested in 2014.