Yep they are - 28 x 32 if memory serves me.
Not sure about Mojácar, but there is a photo shop in Vera, opposite side of the road to Mercadona, that does them.
Alternatively if you’d like, you can send me a digital copy of a recent passport photo, and I can size it down and set them 8 to an A5 sheet which you can then take to any digital copy shop and get printed