Souleman Traore, 20, from Bamako, Mali, poses for a photograph aboard the Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship after being rescued off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

African refugees and migrants, mostly from Sudan and Senegal, wait aboard a rubber boat out of control to be assisted by an NGO, 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday, Feb. 23, 2017. (AP Photo/Santi Palacios)

A pregnant woman from Nigeria rests aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

Refugees and migrants rest aboard the Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship after being rescued off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

African refugees and migrants, mostly from Sudan and Senegal, rest aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued from a boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

African refugees and migrants, mostly from Sudan and Senegal, look at the sea aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued from a boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

A woman from Ivory Coast suckles her baby aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued from a boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

African refugees and migrants, mostly from Sudan and Senegal, look at the sea aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued from a boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

Refugees and migrants rest aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued from a boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

A man from Darfur, Sudan, celebrates to be rescued aboard Golfo Azzurro rescue ship, 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

Refugees and migrants rest aboard the Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship after being rescued off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

Refugees and migrants rest aboard the Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship after being rescued off the Libyan coast, early in the morning Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

A man rests aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued from a boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

African refugees and migrants, mostly from Sudan and Senegal, wait aboard a rubber boat out of control to be assisted by an NGO, 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday, Feb. 23, 2017. (AP Photo/Santi Palacios)

A woman from Ivory Coat holds her child, as they wait aboard a rubber boat out of control to be assisted by an NGO, 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday, Feb. 23, 2017. (AP Photo/Santi Palacios)

A member of the Spanish NGO Proactiva Open Arms crew helps an injured migrant aboard Golfo Azurro rescue ship, after a rescue operation 25 milles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

Refugees and migrants rest aboard the Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship after being rescued off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

African refugees and migrants, mostly from Sudan and Senegal, look at the sea aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued from a boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

Refugees and migrants rest aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued from a boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

A migrant rests aboard Golfo Azurro, the Spanish NGO Proactiva Open Arms rescue ship, after being rescued from a boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)

A Nigerian woman prays as she cries aboard a rescue boat, after being rescued by members of the Spanish NGO Proactiva Open Arms, when she was traveling with 98 other African refugees and migrants, mostly from Sudan and Senegal, aboard a rubber boat out of control at 25 miles north of Sabratha, off the Libyan coast, early in the morning on Thursday Feb. 23, 2017. (AP Photo/Santi Palacios)