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- noun Plural form of
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Several species of deep-water fishes in the family Opisthoproctidae are called "barreleyes" because their eyes are tubular in shape.
The researchers speculate that barreleyes may maneuver carefully among the siphonophore's tentacles, picking off the captured organisms.
The bizarre physiological adaptations of the barreleyes have puzzled oceanographers for generations.
In addition to their amazing "headgear," barreleyes have a variety of other interesting adaptations to deep-sea life.
Robison and Reisenbichler used video from MBARI's remotely operated vehicles (ROVs) to study barreleyes in the deep waters just offshore of Central California.