Rescuers pulled 2,300 migrants to safety on Saturday in 18 separate rescue operations in the Mediterranean coordinated by the Italian coast guard.
A Spanish boat belonging to an EU naval force, an Irish navy vessel and boats of four non-governmental organisations were involved in the rescue operations, the coast guard said in a statement.
It did not say where the migrants, who were travelling in 17 rubber vessel and one small boat, originally came from.
Since moves to stop people crossing from Turkey to Greece, Europe's worst migrant crisis since World War Two is now focused on Italy, where some 115,000 people had arrived by the end of August, according to the United Nations refugee agency UNHCR.
(Reporting by Francesca Landini; Editing by Robin Pomeroy)