Rarely seen barreleye fish filmed in 4K for first time

• MBARI scientists filmed a barreleye fish during a recent expedition aboard the David Packard.
• This is MBARI's 11th observation of the barreleye fish, known for its transparent head.
• The fish was filmed in 4K, providing unprecedented detail of its appearance.
• The barreleye fish inhabits the ocean's twilight and midnight zones, at depths of 2,000 to 2,600 feet.
• The barreleye fish is a six-inch deep-sea denizen that is rarely seen due to its habitat.