The rafts arrive daily now, in fair weather or foul, dozens of migrants crammed on to small, inflatable dinghies more suitable for a pleasure lake than the open sea. Most do not have enough fuel for the crossing; others use oars, not motors.
Along Spain's southern coastline, locals have been horrified by bodies washed up from sunken rafts: among them, a boy of 6 or 7 found on a Cádiz beach last January, and another, aged between 8 and 10, in a national park in Almería in June.
In July, 49 sub-Saharan Africans died when their raft sank near the island of Alborán, a rocky outpost halfway between Morocco and Spain that has become the country's equivalent of Italy's Lampedusa.
Arrivals to Spain by sea almost tripled in 2017, making the so-called Western Mediterranean route from Morocco the fastest-growing gateway to Europe, as the EU clamps down on entries elsewhere. By December 20, 21,468 people had arrived in Spain on migrant boats, compared with 7490 in 2016 and 4408 in 2015.
The arrivals have left Spain's holding centres overflowing. In November, more than 500 mostly Algerian migrants who arrived in Murcia on 49 rafts in a single weekend were detained in an unfinished prison — Malaga 2 — despite the facility lacking drinking water, heating or healthcare. Last weekend, protests broke out outside the jail after a 36-year-old man was found dead in his cell, with demonstrators demanding an investigation into alleged mistreatment and violence towards detainees.