Dry shark's fin: you can put the shark's fin in a sealed altar, lay lime underneath, and check the shark's fin from time to time to see if there is any moisture deterioration, and usually more in the sun exposure can be. Wet shark's fin: that is, soaked shark's fins, first wrap the soaked shark's fin with plastic wrap, and then put it into the freezer layer of the refrigerator, you need to pay attention to can not be placed in the freezer layer, otherwise after freezing, it will be a lack of soft and slippery elastic sense of the teeth, soaked shark's fins should not be preserved in the refrigerator for a long time, you need to consume it as soon as possible.