Meet the warty comb jelly, the only animal with a disappearing anus
Salon,
Staring at a comb jelly, it's not very obvious which end is mouth and which is butt.
Staring at a comb jelly, it's not very obvious which end is mouth and which is butt.
A comb jellyfish. Photo: maritimeaquarium/Flickr, CC BY-ND 2.0 If you keep watching a comb jelly, you may be able to tell which…
Its anus appears and disappears every time it needs to poop, at least every hour.