I just found this awesome video, from one of MBARI‘s ROV’s in Monterey Bay. It is of Macropinna microstoma, a small deep-sea fish with tube shaped, upward-facing eyes located inside its clear, dome-shaped head. The eyes normally face upwards, but can be rotated forward to include the fish’s mouth in their field of view. The current conjecture is that the fish swims along underneath siphonophores, such as Praya dubia, with watching for anything tasty-looking trapped in their tentacles. When it sees something it likes, the fish points its eyes forward and swims up to snatch it.
This is the small video. An altogether more awesome HD version is here.