Blood Can Be Green.

So no...I'm not making some announcement of a new scientific discovery or anything. This fact falls more under the category of illusion and that you can't really trust everything you see....even with your own eyes. So when does this happen? When you are about 30ft underwater and you happen to cut yourself. Your blood will appear green. Why? Simple logic. All colours of light travel at a slightly diffrent speeds. Water slows the speed of light down. So when you are a certain depth underwater, red...being the slowest, gets filtered out first. So when we are at about 30ft underwater, the green pigment in our blood that is usually hidden by the red, is now reflected. If you go deeper, where even more light is filtered out, blood will appear black. So yeah... don't believe everything you see...the eyes can be fooled just as easy.