In a medium bowl, combine the coconut milk, chia seeds, maple syrup, vanilla extract, and a pinch of salt. Whisk together until fully combined.
Let the mixture sit for about 5 minutes, then whisk again to prevent clumping of chia seeds. Cover the bowl and refrigerate for at least 2 hours or overnight until the chia pudding thickens to a creamy consistency.
Once the pudding is set, layer it in serving glasses or bowls. Start with a layer of chia pudding, followed by a layer of blackberries, and then a sprinkle of shredded coconut.
Repeat the layers until the glasses are filled, finishing with a layer of blackberries and a generous sprinkle of shredded coconut on top for garnish.
Serve immediately, or keep it chilled in the refrigerator until ready to enjoy.