![A picture of a barreleye fish shows its transparent head and tubular eyes.](https://cdn.mos.cms.futurecdn.net/vb3ZfYob24aPMrajDdhRye-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/vb3ZfYob24aPMrajDdhRye-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/vb3ZfYob24aPMrajDdhRye-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/vb3ZfYob24aPMrajDdhRye-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/vb3ZfYob24aPMrajDdhRye-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/vb3ZfYob24aPMrajDdhRye-1200-80.jpg 1200w)
Barreleye fish: The deep-sea weirdo with rotating eyes and a see-through head
Thanks to a yellow pigment that filters out sunlight, barreleyes can't be fooled by a common deep-sea camouflage tactic.
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