The trawler "reportedly sank due to heavy winds, rough seas and overcrowding", the United Nations said.
Use our interactive tracker to explore the latest migration statistics for the UK
Prime Minister Pedro Sánchez said migrants helped "build the rich, open and diverse Spain that we are and to which we aspire".
Merz’s government has taken a tougher line on refugees and migrants, amid surging support for the anti-immigration AfD party.
The folk opera celebrating migration in Middlesbrough features more than 200 performers.
Poor weather and a lack of food and water contributed to the deaths, the Greek coastguard says.
Europol said more than 450 officers from the UK, Germany and Belgium were involved in the operation.
The group were recued by French coastguards, who returned them to Calais, French authorities say.
A group of 20 voters are selected to discuss the government's migration policy in Northumberland.
