Migrant and refugees wait for a registration procedure in the town of Presevo, Serbia, August 26, 2015. [Photo/Agencies]

Among them are brothers 21-year-old Mohammad and 19-year-old Ahmad from the Syrian capital of Damascus who left their 65-year-old mother, relatives and university studies behind.

The brothers intend to continue their studies in Germany, where as they say "universities are much better than in Syria." They say they have enough money to get to Germany.

"We slept on the road and didn't have much to eat. We spent three nights in Turkey, five nights on the Greek island waiting for the paper. We spent one day in Macedonia and will spend two days in Serbia," Ahmad said.

"We don't know what is going on in Germany. We will see. We do not have a clear idea. Their universities are better, but it will be hard to get in," Mohammad adds.

New refugees from Syria and other countries in the Middle East and Africa are arriving every day on Greek shores on rubber boats.

They take this same risky and exhausting journey, hoping to continue their lives in a safe place, away from bullets and explosives. Many say they are determined to go back to their homeland and start fresh after the civil war is over.