Valencia, Spain CNN  —  The photos are happy occasions. A dad with two kids on holiday. Family pets with tails wagging. Teen daughters posing for selfies. This is a gallery of the missing. DANA Desaparecidos is a social media effort to find those still unaccounted for in the devastating flash floods that swept through eastern Spain. At least 217 people are confirmed dead and the toll may climb higher. In one miraculous rescue, a woman was found alive on Saturday after being trapped in her car