If you turn your nose up at raw fish, either over rice as sushi or just thinly sliced as sashimi, be careful of taking it to another level: eating the fish meat raw and basically still alive.
One dish popular at hot springs resorts is called “dancing shrimp” (odori ebi). You guessed it — these are live shrimp, swimming in a bowl of soup made up largely of sake. They’ll die in there soon enough, but the way your Japanese friends will do it is to pluck one out, dip it in soy sauce and bite down.