A helicopter spotted the stricken vessel in waters offshore near Malaga after the alarm was raised by an charity, Caminando Fronteras (Walking Across Borders), a spokesman for the coast guard said.
#FronteraSUR El buque Clara Campoamor rescata a 53 de una balsa donde según @walkingborders 3 han desaparecido en el #Mediterráneo. Uno hombre ha sido evacuado inconsciente de la patera a Almería. Otra balsa con 58 personas ha llegado a tierra en Marruecos. pic.twitter.com/qCa74prlPu
— Sergio Rodrigo (@SRodrigoruiz) June 12, 2019
Another boat with 58 African migrants that rescuers had been looking for since Tuesday was believed to have arrived in Morocco, according to the group, the spokesman said.
In the first five months of this year, more than 8,000 migrants have reached Spain by boat, figures given early this month by the interior ministry showed.
That was seven percent fewer than for the same period last year.
The UN migration agency, the International Organization for Migration, says that in crossings across the whole of the Mediterranean, 543 migrants have died, with 166 of them perishing on the route towards Spain.
Last year, the figure was 2,299 while in 2017, 3,139 died.