The Ocean Viking rescue ship picked up 407 people in five operations in recent days.
Nearly 500 migrants rescued in the Mediterranean by two boats run by aid agencies were looking for safe ports in Malta and Italy, the groups said Monday.
The Ocean Viking, a rescue vessel run by SOS Mediterranee in partnership with Doctors Without Borders (MSF) was carrying 407 people rescued in a total of five operations carried out over 72 hours.
Another 78 people were taken on board the Alan Kurdi, run by the Sea-Eye organisation based in Germany. They were rescued in two operations.
Sea-Eye tweeted Sunday that the Alan Kurdi was headed for Italy after Malta refused them a safe port.