[Greek Coast Guard officers move a baby from a dinghy carrying refugees and migrants aboard the Ayios Efstratios Coast Guard vessel, during a rescue operation at open sea between the Turkish coast and the Greek island of Lesbos]By Karolina Tagaris ON BOARD THE AGIOS EFSTRATIOS, Greece (Reuters) - They waved, cheered and let out sighs of relief as their rubber boat, packed with dozens of mainly Syrian and Afghan refugees, approached the Greek coast guard ship that would rescue them at open sea near the island of Lesbos. After being pulled aboard one by one, the men, women, and children staggered, exhausted and relieved, to the boat's rear, where they huddled alongside strangers on Monday and waited quietly to be transported to the shore. By early afternoon, more than 1,500 refugees and migrants reached the eastern Aegean island, a sharp rise in the rate of arrivals from Turkey after days of gale force winds and freezing temperatures.