The boats land on the rocky shores of Lesbos, a Greek island in the northern Aegean Sea, nearly every hour. Sometimes 60 to 70 boats arrive every day, carrying mothers, fathers and children from Syria, Afghanistan and Iraq.
On a chilly, overcast afternoon late last month, one boat arrived just after a downpour. A family of four from Aleppo, drenched and wearing orange life vests, jumped on the beach and held each other, shivering. The mother, Noor al-Kadri, wept as she embraced a volunteer who helped her and her family off the shore.