I think Scratch cat probably travels in a train-- underwater! You can press the up and down arrows to change the speed the train goes up and down. If you make it go too fast it looks pretty goofy-- but I'm not sure if that's a bug or a feature.
I was inspired by a clip art of a train that had smoke coming out of the pipe that (accidentally?) looked like bubbles. Song: A rendition of "Under the Sea" by the bell choir Joyous Bells, which I found on YouTube. Fun fact: I used trig in the project! If you're interested in knowing more about practical uses of "sine," check out the "movement" sprite
