Holy crap! Check this guy out:
http://www.mbari.org/news/news_releases/2009/barreleye/barreleye.html
The barreleye fish lives in the mid-pelagic region and has a transparent head shield that houses a roving eye that moves in the fluid filled cavity!!! I am continuously amazed by the adaptations that have evolved and we humans (a.k.a. evolutionary-newborns) had no idea they existed! We think we're so cool for building something like the Johnson Sea-Link Submersible only to discover that nature has been hiding this design for unknown-thousands of years.
This is why I do what I do....
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