In a medium bowl, gently combine the blueberries and Greek yogurt. Add a pinch of sea salt if desired.

Using a spoon or small cookie scoop, drop rounded spoonfuls of the blueberry mixture onto a parchment-lined baking sheet.

Place the baking sheet in the freezer for at least 30 minutes, or until the clusters are firm.

While the clusters are freezing, prepare the chocolate. Melt the dark chocolate in a double boiler or in the microwave in 30-second intervals, stirring until smooth.

Once the blueberry clusters are firm, remove them from the freezer.

Dip each cluster into the melted chocolate, ensuring they are fully coated. Gently place them back onto the parchment-lined baking sheet.

Return the chocolate-covered clusters to the freezer for another 15-20 minutes, or until the chocolate is set.

Once set, remove the clusters from the freezer and enjoy!