Wash the spinach thoroughly and peel the banana. Prepare the pineapple, mango, ginger, and lemon juice.
Pour the coconut water and almond milk into the blender first.
Add the spinach, pineapple, mango, banana, grated ginger, lemon juice, chia seeds (if using), and ice cubes.
Blend on high speed for 45–60 seconds until smooth and creamy.
Taste the smoothie and adjust the sweetness if desired by adding a little honey or another ripe banana.
Pour into serving glasses and enjoy immediately while fresh and chilled.