Sparks' Crew travels to Turtle Beach to see baby turtles hatching, but instead find the beach filled with litter. Our heroes investigate how the garbage got there and clean it up to make the path to the water clear and safe for the hatching turtles. Curriculum: Human activity has an impact on the world around us, but we can take action to reduce the impact of human activity. / Sparks' Crew gathers at night to help search for a missing superdog, Spotnado. When the dog gets ahold of a flashlight, they use what they learn about light to help catch the dog. Curriculum: Objects can only be seen if light is available to illuminate them or if they give off their own light. Some materials allow light to pass through them, others allow only some light through, and others block all the light.