come on guys...this is NOT blood. don't be so gullible. first of all, if you keep zooming out, it suddenly becomes the same color as the other bodies of water. the photo is digitally altered to show chemically-polluted water. europa maps (which as the rights to use google maps) digitally colors certain bodies of water in some places to indicate sea water, drinkable water, and chemically-polluted water. they are usually colored blue, green, and RED