Just a short, offbeat fact, to remind us of the mind blowing mysteries which dwell hundreds or thousands of meters beneath the ocean waves: Macropinna microstoma, the only species of the genus Macropinna lives at about 600-800 meters below sea level. It has a small mouth, is covered almost entirely with scales, and it has a fluid filled transparet head, which allows lenses of its eyes to be seen.

MBARI researchers Bruce Robison and Kim Reisenbichler observed that when prey such as small fish and jellyfish are spotted, the eyes rotate like binoculars, facing forward as it turns its body from a horizontal to a vertical position to feed. However, this fish has been documented in 1939, but nobody knew about its amazing features, because the head is destroyed when brought to the surface from the depths.