Eleven migrants are believed to have drowned after sinking off the Algerian coast of Tipaza on Sunday evening.
CIPIMD, a Spanish NGO, said a boat carrying 16 migrants set sail from North Africa for Spain’s Balearic Islands.
Five people, including two children, were rescued from the damaged ship, according to the organization.
Last year, 3,077 migrants died or went missing trying to reach Europe by sea, according to the UN refugee agency.
But campaigners say the number of people who died trying to reach Spain in 2021 stood at 4,404, the worst toll since 2015.
Meanwhile, officials warn that at least 478 people have already died or gone missing trying to reach Europe since early January.
The UN has called on governments to develop “alternatives” to the dangerous sea routes that asylum seekers desperately take to reach European lands.