The mysterious case of the sea walnut’s disappearing anus.

Image from Unsplash

I’m going to go ahead and assume that you haven’t heard the phrase “transient anus” before.

The phrase was coined to describe an anus that appears only when it is needed for pooping, vanishing as soon as the deed is done. The proud owner of this unique claim to fame is the warty comb jelly or “sea walnut,”, a jellyfish-like creature native to the western Atlantic…