Jasper the Penguin (2003)

S1E2 Lighting the Way

Jasper repeatedly knocks his head in the dark, prompting Emma to hand him a flashlight, explaining, “it only works in the dark.” Eager to find a shadowy spot, Jasper inadvertently drops the flashlight down a drain. This leads to a thrilling chase through the mysterious underworld. In the end, Jasper manages to retrieve his flashlight from the harbor, using a shopping net to fish it out of the water.