Yes, we do, and very popular, too. I've never looked into this historically, but I understand that the practice of eating raw fish has been quite common on the fishing boats and in the fishing villages mainly for hygenic reasons. It's ingrained in the culture, and especially with the Japanese shushi being an example of high-quality cuisine, quite a few regional dishes have become widely popular. Traditionally, we have called it 회 WHE 膾.

I understand the Chinese also had the practice. But nowadays they don't eat raw fish. I don't know exactly when they stopped. Could be related to change in weather, pollution, or cultural change ?