A coast guard statement says the immigrants were picked up yesterday in international waters between the Greek islands of Rhodes and Karpathos.
The operation involved nine cargo ships and ferries in the area, a navy frigate and a rescue helicopter.
The immigrants' nationalities have not been made public. They were safely taken to Rhodes.
Greece is a major entry point for people -- mostly from war-torn countries in the Middle East and Africa -- seeking a better life in the European Union.
