The first thing you need to do is wash the whole papaya thoroughly under running water to remove debris or dirt. 

Next, pat the fruit dry with a paper towel and use a sharp knife to cut ends off it. 

Cut fruit lengthwise and scrape away the seeds of the papaya using a spoon. Ensure not to scoop too deeply into the fruit so you won't lose some of its flesh. 

Remove the skin of the papaya using a vegetable peeler. 

Cut the papaya into your desired shape and size. 

Transfer the slices to an airtight container. 

Slide the container into the refrigerator.