5-10 minutes. According to the Animal Encyclopedia, razor clams are a common seafood creature that is relatively easy to fry. It can be fried continuously over high heat for 5-10 minutes. Razor clams are widely distributed in coastal areas of China. They inhabit the sand in the middle and low tide areas of estuaries or inner bays where a small amount of fresh water flows in. They dig burrows with their feet and use water pipes to breathe and feed.