Researchers at the Monterey Bay Aquarium Research Institute recently solved the half-century-old mystery of a fish with tubular eyes and a transparent head. Ever since the "barreleye" fish Macropinna microstoma was first described in 1939, marine biologists have known that it's tubular eyes are very good at collecting light.
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Barrel Eye Fish Out of Water
53653506-Aquatic-Life by Ester Hermanni - Issuu
It Looks Awkward, but This Fish Has a Secret Glow - The New York Times, fish
Vertebrates – Animating the Sea: Motion, Light and Eyes
Pacu: Boy catches fish with 'human-like teeth' in an Oklahoma pond : NPR, fish
Vertebrates – Animating the Sea: Motion, Light and Eyes
Glowing Deep Sea Barreleye Spook Fish Macropinna Microstoma Iron on Patch
Fish with transparent head - Boing Boing