@BluRae wait is that not true? why *are* they blue then?
@Gaelan They actually aren't blue! It's an optical illusion. Deoxygenated blood is dark red.
https://www.wtamu.edu/~cbaird/sq/mobile/2012/12/18/why-are-veins-blue/
@Gaelan They actually aren't blue! It's an optical illusion. Deoxygenated blood is dark red.
https://www.wtamu.edu/~cbaird/sq/mobile/2012/12/18/why-are-veins-blue/