Tip: Layer 3 backgrounds and tides disappear when you hit a message box, so plan your level around that. For example, you can add a sublevel without layer 3 at the start/midpoint, and include your message there.
Yay, my first fully functional sprite(s)! Inspired by a...rather unusual source, these little guys are 16x32 sprites that bounce around. One of them bounces up and down; the other bounces forward. LunarDrake drew the graphics, so if you use them, be sure to credit him as well.