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A man from Eritrea is rescued: "You have to search or 480 people are going to die"
Divers are hoping to resume their search for the bodies of more than 200 migrants, two days after their boat sank off the Italian island of Lampedusa.
Rescuers have so far found 111 bodies, and 155 people have been pulled alive from the seas 1km (half-a-mile) from the island in the Mediterranean.
Many bodies are expected to be found in the shipwreck. The search was hampered on Friday by rough seas.
The boat was carrying some 500 people - mostly from Eritrea and Somalia.
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The arguments have begun over how to stop this tragic loss of life.
Some officials are saying that if you close borders, then you give more power to the traffickers. Others point out that there are 26 million out of work in the EU and that Europe is reluctant to accommodate more migrants.
UN Secretary General Ban Ki-moon said on Thursday that there needed to be "more channels for safe and orderly migration". It might help but it remains likely that thousands will still try and migrate to Europe.
EU Home Affairs Commissioner Cecilia Malmstroem vowed to "fight smugglers exploiting human despair".
None of this is easy but officials are saying that the migrants have become a "European tragedy".
Read more from Gavin
The 20m (66ft) vessel began taking on water when its motor stopped working as it neared Lampedusa on Thursday morning, survivors said.
Some of those on board then reportedly set fire to a piece of material to try to attract the attention of passing ships, only to have the fire spread to the rest of the boat.
The boat - which set sail from the Libyan port of Misrata - is thought to have capsized when everyone moved to one side.
Video footage later showed the vessel lying upright on the seabed some 150ft (45m) below the surface.
'Savage world'
Divers are hoping to resume the search in the coming hours, officials say.
"Though the bad sea conditions persist, our guys are ready to go down if a window opens up that makes it safe for them," coastguard spokesman Filippo Marini told Reuters.
The operation had initially focused on off an area of Lampedusa called Rabbit Island, but the search was then widened beyond the initial radius of four nautical miles in an effort to recover bodies that had been swept away by tides.
The divers have been describing seeing horrific scenes inside the wreckage.
Key migrant routes to southern Europe
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Illegal migration numbers
Since 1988, at least 19,142 people died trying to reach Europe's borders - 2,352 in 2011 alone
6,707 have died off Sicily in the past 10 years
In 2012 Italy examined 27,000 asylum claims - 24% of applicants got international protection
272,208 asylum claims in whole EU in 2012, of which 25% were in Germany
30,100 irregular migrants reached Italy by sea in Jan-Oct 2013 - about half were from Syria and Eritrea
Sources: UNHCR, Frontex, Fortress Europe
Europe's migrant dilemma
So many bodies have been brought ashore that the island has had to send for more coffins and turn a hangar at the airport into a huge makeshift mortuary.
Italians are aghast at the scale of the tragedy - Italy's worst ever migrant shipwreck, the BBC's Alan Johnston says.
A day of mourning was observed on Friday, with flags flying at half-mast and a minute of silence held in all Italian schools.
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Libya is attractive for migrants wanting to travel on to Europe, says the BBC's Rana Jawad
An evening mass and silent candlelit procession were held on Lampedusa. Most residents of the island turned out, the BBC's Gavin Hewitt reports from the scene.
People were sombre, but also angry that such tragedies were happening all too often and so little was being done to prevent them, he adds.
Pope Francis, visiting Assisi, described Friday as "a day of tears" for the victims and condemned a "savage world" that ignores the plight of "people who have to flee poverty and hunger".
He said he wanted to use abandoned Catholic monasteries and convents to house refugees.
Lampedusa Mayor Giusi Nicolini - who wept at the scene - said: "After these deaths, we are expecting something to change. Things cannot stay the same.
"The future of Lampedusa is directly linked to policies on immigration and asylum."
Interior Minister Angelino Alfano said: "This is not an Italian tragedy, this is a European tragedy. Lampedusa has to be considered the frontier of Europe, not the frontier of Italy."
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Gavin Hewitt says that at least 200 migrants are still unaccounted for
Mr Alfano said the divers had seen dozens of bodies in the wreck. "There could be even more in the hold, where the poorest of the poor are usually put," he told parliament.
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Africa may be seeing sustained economic growth, but few of the profits appear to be trickling down to the poorest”
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My two weeks on a migrant boat
Half of the bodies so far recovered are said to be women and four are children.
The skipper of the boat, a 35-year-old Tunisian, has been arrested. It has emerged that he was deported from Italy in April.
Footage from Lampedusa showed bodies being laid out on the dockside.
Mr Nicolini described the scene as a "continuous horror", while a local doctor said the hardest part to deal with was seeing the bodies of children.
An Eritrean woman who had initially been placed among the bodies on the shore was later found to be breathing and was taken to hospital in Sicily.
This image released by the Italian coastguard shows some of the migrants who survived the shipwreck.
But their boat lies at the bottom of the sea, along with many bodies of those who did not survive the disaster.
The scale of the tragedy meant a hangar
at Lampedusa's airport has had to be turned into a temporary mortuary
and more coffins brought on to the island.
Black ribbons in memory of those who died
were tied to banners during a mass by Pope Francis in front of St
Francis Basilica in Assisi.
Residents of Lampedusa held a candlelit
procession through the streets of the island. One banner read: "Once
again you didn't hear me crying."
In a statement, UN High Commissioner for Refugees Antonio Guterres commended the swift action taken by the Italian coastguard to save lives.
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Why people flee Eritrea and Somalia
Eritrea:
UN says 3,000 people try to flee each month
Human rights groups say the country is becoming a giant jail, with some 10,000 political prisoners
Young people conscripted to army - sometimes until age of 40
Somalia:
Much of the country controlled by al-Shabab Islamist militants
Country ravaged by two decades of war
Have you or has anyone you know made this journey? Or have you taken other risks to get into Europe? Pleas