It’s like Weird Al said: Everything you know is wrong, black is white, up is down, short is long, and some blood is clear. Maybe he didn’t say that last thing.
Anyway. Did you know there is a fish swimming around in the Antarctic Ocean without scales or hemoglobin? Hemoglobin is what makes blood red, so this Ocellated Ice Fish (Chionodraco rastrospinosus) has transparent blood keeping him going. LiveScience reported it as “gin-clear blood” and this drawing had to happen as a result.