Teams like this one from Turkey's Humanitarian Relief Foundation enter buildings, searching for survivors, and retrieving bodies.
A torrent of water unleashed by a powerful storm burst dams on Sunday night, leaving the eastern city of Derna inundated.
Donations from various parts of Libya slowly began trickling in on Thursday (September 14).
And volunteers from a youth movement gathered to sort clothes donated to support survivors.
Among the countries sending aid, Turkey sent a ship carrying equipment to set up two field hospitals.
Italy sent three planes of supplies and personnel, as well as two navy ships.
The scale of the devastation in Derna can be seen from the air.
Multi-story buildings here was washed into the sea with sleeping families inside.
Confirmed death tolls given by officials have varied.
But all are in the thousands, with thousands more on lists of the missing.
This Sudanese factory worker in Derna, Walli Eddin Mohammed, said he was woken in the early hours of Monday.
"We woke up at around 3 or 3:30 in the morning, we heard a large bang, anyone who was awake in Derna for sure must have heard it. The water was unbelievable, everybody could hear it. When we went outside there was no more city, it had been razed to the ground."
Recovery and rescue efforts are hindered by political fractures Libya, a country of 7 million people.
It has been at war on-and-off and without a government holding nationwide reach since a NATO-backed uprising toppled Muammar Gaddafi in 2011.
The World Meteorological Organization said the huge loss of life could have been avoided if Libya - a failed state for more than a decade - had a functioning weather agency in place.
