In a saucepan over low heat, add blueberries, maple syrup, lemon zest, and lemon juice, and bring to a low boil, about 5 minutes. Make sure to stir occasionally and the blueberries will begin to burst. Use a wooden spoon to mash about half of the blueberries and release the juices.
Turn the heat up a bit to medium-high heat and allow the mixture to boil for about 10 minutes, or until the liquid is reduced by half. Make sure to stir occasionally.
Reduce the heat to low and add the chia seeds. Cook for about 5 minutes, stirring frequently. The jams should begin to thicken.
Turn off the heat and stir in sea moss. Allow the jam to cool for at least 10 minutes and then transfer the jam into a mason jar. Use as you normally would use jam — on toast, pancakes, waffles, sandwiches, etc.
Allow the jam to cool completely before transferring to the fridge. Once cool, close the lid on the jam tightly and store it in the refrigerator. The jam will last in the fridge for up to 1 week or in the freezer for up to 2 months. Do not store this jam at room temperature.