Prepare the Ocean Water gelatin according to the package instructions and allow it to cool slightly.
Pour the rainbow Nerds into the bottom of four 8-ounce clear plastic cups.
Pour the prepared gelatin evenly over the top of the Nerds.
Place the cups in the refrigerator to chill for 1 hour, until the gelatin is soft set.
Lightly push the Swedish fish into the gelatin, then decorate the top of each cup with more fish.
Allow to fully set for another hour before serving.