Tunisian authorities said 47 bodies were recovered off the country's southern coast, close to the city of Sfax, while 68 people were rescued.
German rescuers said on Saturday they had saved 128 migrants from an overcrowded boat floating in the Mediterranean after it lost the ability to steer.
A Russian fighter jet crashed after taking off from an airbase in Syria on Thursday, killing both pilots, Moscow's defence ministry said in a statement carried by news agencies.
Flags flew at half-mast in Mali on Thursday as the government announced 48 of its citizens drowned in the Mediterranean on a single day over the weekend, all trying to reach Europe.
Rescuers pulled 700 boat migrants to safety in the Mediterranean and found 23 bodies during one operation on Friday, an Italian coastguard spokesman said, the second loss of multiple lives recorded in the area so far this week.
A migrant rescue ship in the Mediterranean carried hundreds of children and unaccompanied minors from over 15 countries to safety in Italy on Friday.
Doctors Without Borders (MSF) said on Saturday it was suspending its migrant rescues in the Mediterranean because it felt threatened by the Libyan coastguard and the Italian government's policies have made its job harder.
France will set up processing centres this summer in Libya for asylum seekers trying to reach Europe across the Mediterranean, President Emmanuel Macron announced on Thursday.
The EU urged Italy on Thursday to allow more time to discuss its threat to suddenly stop vessels from other countries disembarking migrants in Italian ports, after rescuing them in the Mediterranean.
Hundreds of migrants, some of them drifting in rubber dinghies off the coast of Libya, were picked up by Spanish and Italian ships on Saturday, adding to a lengthening list of rescue operations in recent days.
Spanish coast guards rescued more than 170 migrants crossing the Mediterranean to Europe from northern Africa in four separate boats, they said Saturday.