The Costa Concordia struck a reef near the Tuscan island of Giglio on Jan. 13. The latest discovery brings the number of bodies found to 30. Two people remain missing and are presumed dead.
The bodies were all found in spaces between the hull and the seabed, according to the Italian Civil Protection agency, which is coordinating search operations. No details were given about the victims.
Before Thursday, all of the other bodies had been found inside the ship, except for three found in the sea near the ship in the first hours after the Concordia capsized.
Since the accident, the cruise ship has been lying on its side, half submerged in the water near the port. The operation to remove the ship could take as long as 12 months.
Concordia's Capt. Francesco Schettino remains under house arrest near Naples. He is under investigation for alleged manslaughter, causing a shipwreck and abandoning ship during the evacuation. Schettino has denied wrongdoing and claimed that the reef wasn't marked on charts.
The Associated Press contributed to this report.