Pour the light coconut milk into the blender first. This helps the blades move more freely.
Add the pineapple chunks, mango cubes, pea-protein powder, and goji berries to the blender.
Secure the lid and blend on high speed for 60-90 seconds, or until the mixture is completely smooth and creamy.
Taste and add the optional agave nectar if you prefer a sweeter smoothie, then blend for another 10 seconds to combine.
Pour into four glasses and serve immediately.
Taste before you sweeten! Ripe, sweet fruit often provides enough natural sweetness, so you may be able to skip the agave nectar entirely.