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Pacific Barreleye Fish — printable fact sheet
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Pacific Barreleye Fish
Macropinna microstoma
The Pacific Barreleye Fish is a deep-sea fish known for its transparent, dome-shaped head that allows its tubular eyes to rotate and look both upward and forward. This remarkable adaptation helps it spot prey silhouetted against the faint light above in the ocean depths. Barrele…
Did you know?
- The green lenses in the barreleye fish's eyes filter out sunlight from above, making it easier to spot the bioluminescent prey below.
- The Pacific Barreleye Fish has completely transparent skin on the top of its head, exposing its internal organs and eyes. Its barrel-shaped eyes can rotate inside the head, allowing the fish to see directly above and in front of itself. Despite its alien appearance, this fish is a master of stealth, using its transparent head to avoid predators and sneak up on prey.
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