MADRID—A humanitarian aid group that monitors the plight of migrants taking perilous seaborne routes to Spain said that 21 women and one girl have died and several dozen more people were lost at sea while trying to reach the Canary Islands. Helena Maleno, founder of nongovernmental organization Walking Borders, tweeted Thursday that 22 bodies have been recovered from a migrant boat by the Moroccan navy. She said there was one girl among the female casualties, who were mostly from the Ivory Coast and Guinea. Spain’s maritime rescue service said it had no information on the case. Reached by The Associated Press, Morocco’s national police confirmed that authorities in the coastal city of Dakhla were looking into the case, but refused to provide details. Health authorities in the southern city also refused to provide any information. Maleno said that the boat started its journey carrying 86 people, including 36 women and …