I worked for the Japanese for about 12 years. They taught me what to look for and how to appreciate Sushi. It is a very dangerous food if the Sushi Chef is not skilled in his profession. If the sashimi is not fresh or otherwise bad, the parasite you can have invade your stomach is frequently there forever. Beware of Sushi bars owned by Koreans (a huge number are as they are good investments), Vietnamese, and Chinese......all are not often trained and frequently buy on price only and do not look for nor know how to select fresh sashimi. Incidentally, the Atlanta Airport Mariott Sushi Bar is a dangerous sushi bar. The sushi is not fresh, smells from several feet away, and is a terrible place to eat.