 The video footage, shot in deep water off Chichi-jima in the northern Pacific Ocean, shows "T. danae" emitting blinding flashes of light from photophores on its arms as it attacks its prey.It is believed that this highly maneuverable squid uses the bright flashes to disorientate potential prey.These flashes may also serve to illuminate the prey to make for easier capture as well as a courtship and territorial display.