Combine in a saucepan the coconut mil, lime juice, curry powderm ginger and pepper flakes.
Bring to a boil over high heat, then immediately reduce the heat to low. Simmer, uncovered, for 30 minutes, stirring occasionally.
Meanwhile, prepare a medium-hot charcoal fire or preheat a gas grill or broiler. Make sure the grill rack is clean and place it as close to the heat source as possible.
Place on the grill or under the broiler as close to the heat as possible:
Turn the shrimp after the first side becomes pink, 2 minutes or so; turn the scallops when the first side becomes opaque, 2 to 3 minutes. Season liberally with:
Grill or broil until the second side is pink or opaque; test one of the pieces by cutting into it to make sure it is cooked through. Remove to a serving bowl, gently warm the coconut sauce if necessary, pour it over the top, and sprinkle with seasame seeds.