MADRID—Emergency services on Spain’s Canary Islands say 319 people, including 59 women and 24 children, were rescued from seven different boats trying to reach the archipelago in the Atlantic Ocean, while activists say at least 18 migrants have died. Spanish rescue vessels reached the boats in different locations late Tuesday and early Wednesday, a Maritime Rescue Service spokeswoman told The Associated Press, adding that rescuers didn’t find any bodies on or near the boats. Walking Borders, a non-governmental organization working with migrants in the region that is often contacted by people in distress or their relatives, said at least 18 people traveling on one of the boats had died. “Rescue means were activated too late, despite having the boat’s location,” Helena Maleno, the NGO’s founder, wrote in a tweet. The maritime rescue service spokeswoman, who was not authorized to be named in media reports, said during one of the operations …