Combine the coconut milk, milk, cocoa powder, and sea salt to a small saucepan. Whisk until the cocoa is fully incorporated and no lumps remain.
Heat over medium-low heat until the mixture is steaming and just beginning to bubble around the edges. There's no need to boil it.
Remove the pan from the heat and stir in the chopped chocolate. Continue whisking until the chocolate melts completely and the mixture is silky smooth.
Taste and add honey if desired, stirring until dissolved.
Fill the popsicle molds. Allow the mixture to cool slightly before pouring it into popsicle molds. This helps it thicken slightly and prevents separation.
Insert sticks and freeze until completely firm, about 6 hours or overnight.
Notes
To release the fudgsicles, briefly run warm water over the outside of the molds. Gently pull on the sticks and serve immediately.