Preheat oven to 350 degrees. Cream together sugar and butter in medium bowl.
Add eggs one at a time. Mixing after each addition.
Stir in yogurt and vanilla.Mix in mashed bananas. Mix in flour mixture until evenly moistened. In a small bowl combine flour, baking powder, baking soda, and salt. Do not over mix.
Stir in blueberries and coconut
Pour into greased 8-inch loaf pan.
Bake for 50-60 minutes or until toothpick comes out clean.
Let cool for 10 minutes in pan. Remove loaf to rack to cool.