Coast Guard Commander Filippo Marini said 43 bodies were recovered from within the ship's hold, while one was spotted by a helicopter floating near the wreck, before the operation was suspended for darkness.
A disproportionate number of the dead are women: So far the bodies of 81 women have been recovered, while only six of the survivors were female. Eight of the dead are children.
"Inside, we're finding more women than men," Gianni Dessi, the coast guard official coordinating the diving operation, told Sky TG24. "We hope not, but we expect to find more children."
He said the scene inside the ship's hold is tough for divers, but that "maintaining cold blood is a quality that helps the operation."
The survivors were helping identify the bodies, mostly through photographs. In some cases, divers also have recovered documents.
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AP correspondent Colleen Barry contributed from Milan and Nicole Winfield from Rome.