A new collaborative mural by Barcelona-based artists María López and Javier de Riba undergoes a dramatic shift from day to night. Titled Hizkuntza, the mural appears to be a simple outline of a whale by day, but darkness reveals an intricate glowing design. The placement of the whalers inside the whale’s belly suggests an ambiguous power dynamic: did the whale swallow the sailors, or did they overtake the beast and turn it into a ghost of its former self? More