To prepare the raspberry filling, add the raspberries, maple syrup, and chia seeds to a small pot over low heat. Simmer on low for a few minutes until the raspberries are broken down. Stir to combine. Remove from the heat and let the chia seeds thicken to form a jam-like sauce. Set aside to cool.
Prepare a baking sheet with parchment paper. Dollop the cooled raspberry filling by even spoonfuls onto the parchment paper. Set in the freezer until frozen, about 1 hour.
Melt your dark chocolate coating. Remove your raspberry bites from the freezer. Dip each raspberry bite into the melted dark chocolate by using a fork and removing any excess chocolate. Sprinkle with sea salt. Set back on the parchment paper.
Set the chocolate covered raspberry bites in the freezer until set, for at least 30 minutes. Enjoy. Store in the freezer.