Turkish security forces found the bodies of 4 refugee children on Friday who drowned after their boat capsised near the western province of Canakkale.
The coast guards said that the four children died after a refugee boat carrying 55 people sank off the western coast of Turkey.
They also said that the boat carrying Afghan and Syrian refugees sank as it was travelling to the Greek island of Lesbos, near the Ayvacik district of Turkey’s western Canakkale province.
Coast guards launched the rescue operation in Ayvacik after some refugees made a phone call to ask for help due to rough seas and high waves.
The bodies of the four children were taken to Ayvacik State Hospital morgue while four other refugees were taken to Edremit State Hospital for treatment.
Moreover, two Syrian children also died on Friday after a boat carrying 25 refugees sank off Turkey's Bodrum Peninsula.
The officials reported that the two children - one-year-old Diven Halil Hussein and four-year-old Beren Halil Hussein - were siblings.
Turkish Coast Guard ships carried out eight operations on Thursday evening and Friday overnight to save migrants undertaking the dangerous sea journey to Greece, despite bad weather conditions.
Three vessels rescued a total of 357 people, including women and children, providing many of them with blankets, clothes, food and water.
According to the International Organization for Migration, more than 220,000 refugees arrived in Greece by sea in October and more than 220 died in the waters between Turkey and Greece that month.
Since the start of the year, the organisation has recorded at least 653,075 refugees arriving in Greece and about 512 refugee deaths in the Aegean region.