Survivors of the boat that overturned off the coasts of Libya Saturday, wait to disembark from Italian Coast Guard ship Bruno Gregoretti, at Catania Harbor, Italy, Monday, April 20, 2015. A smuggler’s boat crammed with hundreds of people overturned off Libya’s coast as rescuers approached, causing what could be the Mediterranean’s deadliest known migrant tragedy and intensifying pressure on the European Union Sunday to finally meet demands for decisive action.