NEW : Greece 's coast guard rescues 85 migrants in a separate operation . The Italian navy rescues 233 migrants from an overcrowded boat in high seas . Comment: They are being given medical help , food and other emergency supplies , the coast guard said . Tens of thousands embark on the risky crossing each year in the hope of reaching EU soil .
NEW : Greece 's coast guard rescues 85 migrants in a separate operation . The Italian navy rescues 233 migrants from an overcrowded boat in high seas . Comment: Tens of thousands embark on the risky crossing each year in the hope of reaching EU soil .