Pacific Barreleye Transparency Photograph

Barreleye fish, as seen above, have incredible see-through tissue in their heads, which scientist posit are used to help refract more light around their eyes to improve vision.

Savannah Cox
Savannah Cox is the Managing Editor of All That Is Interesting. She holds a Master's Degree in International Relations, and works as a reporter/producer for DNAinfo.
Close Pop-in
Like All That Is Interesting

Get The Most Fascinating Content On The Web In Your Facebook & Twitter Feeds