Turkish authorities detained several groups at sea shortly after dawn, including about 40 Iraqis, some of whom set sail in a small dinghy from a cove 20 km (12 miles) south of the town of Dikili, a Reuters witness said.
Some were left on the beach as the dinghy was too small to carry them all. They watched as the Turkish coastguard intercepted the vessel moments later.
'Greece does not want to host us. Turkey is not allowing us. Where should we go? We drown in the sea with our children, that’s it,' said one Iraqi, declining to give his name.
They were later put on buses and taken to Dikili, where a small reception center has been set up in the port to process migrants sent back from Greece. Around 15 Pakistani migrants were also intercepted and brought to the town.
On a road outside Dikili, nine Syrian Palestinians, their belongings in rubbish bags slung over their backs, were trying to find transport after abandoning their efforts to cross, deciding the groups they planned to join were too big and the boats too small.
They had fled from the Palestinian refugee camp of Yarmouk on the outskirts of the Syrian capital Damascus. Some said they wanted to cross, others said they now hope to be settled in a refugee camp in Turkey.
'This agreement is not about Syrians or Palestinians. Where can we go if we go back to our land?' one said of the EU-Turkey deal, declining to give her name.