This should really be titled From the Vorlon Files, damn I still miss him. Anyway..............
"A jellyfish-like creature has a neat trick that makes it unique among animals: its anus forms only when it needs to defecate, then disappears without a trace. That is the really spectacular finding here,” says Sidney Tamm of the Marine Biological Laboratory in Woods Hole, Massachusetts, who made the discovery. “There is no documentation of a transient anus in any other animals that I know of.”
("Woods Hole"
)
https://www.newscientist.com/article/219...s-evolved/
"A jellyfish-like creature has a neat trick that makes it unique among animals: its anus forms only when it needs to defecate, then disappears without a trace. That is the really spectacular finding here,” says Sidney Tamm of the Marine Biological Laboratory in Woods Hole, Massachusetts, who made the discovery. “There is no documentation of a transient anus in any other animals that I know of.”
("Woods Hole"

https://www.newscientist.com/article/219...s-evolved/
Being told you're delusional does not necessarily mean you're mental.