The Coast Guard said today that nine children were among the dead, four girls and five boys, while eight adult men and one woman also died.
Vessels from the European border agency Frontex were assisting the Greek Coast Guard in the search for others possibly missing, after 10 people were rescued.
Despite toughening European border controls, refugees and migrants have continued to travel to the Greek islands near the Turkish coast, at a rate of roughly 1,500 per day since the beginning of the year, braving the bad weather in dinghies and old wooden boats.