Open the tuna cans and filter the liquid out. While the tuna is drying prepare the rest of the ingredients. Make mayo if necessary shred the carrot and dice the celery. If necessary check how to make mayonnaise in the Low Carb Condiments section. Place the tuna mayo carrot and celery into a bowl. Mix everything together until getting a uniform texture. Open canned fish shouldn't be kept long in the fridge so prepared tuna salad should be used up as soon as possible. Keep it in an airtight container in the fridge and definitely not longer than 6 days.