Measure coconut milk. Add enough orange juice to bring the liquid measure up to 2 cups.
Put all ingredients in blender container. Blend on high for several minutes. Stop once to stir down any chia seeds that are stuck to the container. Blend again until liquified.
Pour into bowl, cover, and refrigerate 4 hours or longer.
Serve cold.
Notes
Garnish, if desired, with coconut, chopped nuts, or fruit.