They might be splashing in a pool on a hot summer day, having a great time and cooling off.
It could be that they are splashing in a fountain at a park, enjoying the water and the moment of excitement.
It could be in a cute and colorful bathroom with toys and bubbles everywhere.
It could be for a family picnic, or maybe to ask for help with homework.
They could be imagining themselves as superheroes and having adventures.
They could be using it to play make-believe or pretending to be someone else.
It could be that the kids are showing their parents a new game they learned outside. Or perhaps they're telling their parents about something they saw that made them curious.
Often, kids splashing scenes in cartoons show them playing in a water park with slides and fountains. Sometimes they're in a backyard pool having a water fight.
They could be at a birthday party, having fun and playing with the balloons.
The scenarios can vary. Maybe they're on a beach, listening to the waves and having a nap. Or they could be in a forest cabin, curled up on a sofa by the fireplace.
They might be on a dare or adventure. Maybe they lost track of time and are trying to get home quickly.
The transparent cartoon kids with backpacks might be in a science experiment gone wrong, or in a story about alternate dimensions where such transparency is normal. It could also be a symbol of inner transparency, showing their true selves.