Wow that’s just amazing; you can actually see what’s inside the fish’s head. It’s called barreleye fish, and was discovered alive in the deep water off California’s central coast by the Monterey Bay Aquarium Research institute.
These images were taken back in 2004, but they were released just yesterday.
The fish is about 6-inch (15-centimeter) barreleye (Macropinna microstoma) had been known since 1939–but only from mangled specimens dragged to the surface by nets. National Geographic