Scientists long warned Spanish and EU authorities of the need to protect Valencia from floods, but masses of people received no warning until walls of water broke over their homes and workplaces.

Spanish navy diver Alvaro Carrillo donned his wetsuit and prepared a speedboat to scour a normally picturesque lagoon made murky by a sea of debris -- and potentially bodies.

Spanish authorities redeployed a marine research vessel to join the search for missing flood victims along the Mediterranean coast Tuesday. The Ramón Margalef — a nearly 151-foot long vessel “equipped with cutting-edge technology,