Ummmm I don't think you guys are correct. You can have Sushi
rolls that are essentially fish or veggies wrapped in rice and secured with seaweed, but more classic sushi is raw fish cut into strips and laid upon rectangular strips of white rice. These are grasped by the chopsticks and dunked into the soy sauce before consumption. If you are clever and discerning, you will take small chunks of the nuclear green mustard and
mix it with the soy sauce before dunking said sushi and it will either delight or FRY your taste buds, in either case the sensations will be unique. I can usually put away between 20-30 such pieces at my local
all-you-can-eat Japanese establishment at a nominal cost of about $16.00, including Miso Soup and a coke or Japanese beer. Not bad.
Sashimi OTOH is simply the raw fish and soy sauce with Wasabi mustard sans any rice. I think the rice makes the dish by soaking up the soy/wasabi combo.