Preheat oven to 350F.
Place 12 cupcake wrappers in a muffin tin.
In a large bowl mix together the eggs, melted coconut oil, maple syrup, and vanilla extract.
Sift in the coconut flour and tapioca flour. Add the sea salt and baking soda. Mix thoroughly.
Fold the blueberries into the mixture, being careful not to break them.
Fill the cupcake wrappers evenly with the batter.
Bake for about 35 minutes or when a toothpick inserted into the deepest part of the muffins comes out clean.