Corwood, I'm so sorry. It looks like he had "extra" time here to be happy.
So wait, divesting the sushi of its exoskeleton and/or scales, and applying a very sharp knife to its guts (I don't care what creature it is, I can't imagine it's sanitary to eat anybody's raw guts), is not enough to kill it?
Sushi isn't defined by the above, for starters. Lee and I have seen a lobster cut in half and the bottom half dressed as sushi served (I typed severed the first time) around the top half which was certainly not dead. Polgara and I saw something similar with some sort of fish. You eat it around it. We've seen crab served leg by leg as the source, so to speak, sat behind the counter still. We've seen a martini glass full of wriggling something, and other sorts of shellfish where they fry one end and serve it with the twitching other end.
It's an endlessly fascinating restaurant.