I like how the Wikipedia article mentions that it was observed that from certain angles this thing looked like a pubis.
That would make that whole death or cake question a little more difficult.
Which makes sense, as “urchin” (now an obsolescent word predominatly used pejoratively of a street kid) originally was the common term for the hedgehog.
Though if people sell those worms in pet shops, calling them “sea tribbles” would be good marketing. 
Unless the customers had seen the original episode. :eek:
I for one welcome our new tribble overlords.