Organs are a distinct structure made of multiple tissues. So if this thing is just a few layers of tissue, then you can make the argument that the whole creature is essentially a single-organ organism.
Truth be told, I suspect there is a certain amount of hyperbole in the infographic.
Why is the digestive sack not an organ?
Organs are a distinct structure made of multiple tissues. So if this thing is just a few layers of tissue, then you can make the argument that the whole creature is essentially a single-organ organism.
Truth be told, I suspect there is a certain amount of hyperbole in the infographic.