32. The Barreleye Fish (Macropinna microstoma)
The Barreleye Fish is one of the ocean’s strangest sights, with a transparent, dome-like head and tubular, upward-facing eyes. In the past decade, scientists have filmed this elusive fish in action, revealing how its unique anatomy helps it spot prey silhouetted above. Its eerie, glassy head and alien-like gaze have fascinated both researchers and the public. Explore more about this bizarre fish at MBARI.