Sometime the mollusk glitches and doesn't go to the correct layer. If that happens, click the green flag again. Click on Flippy to talk to her. When she is fed, or bouncing her ball, her tail might come off. But, don't worry! Axolotls have amazing regeneration abilities! Her tail will grow right back. The tail thing came from a bug in the code, but I didn't bother to fix it. It was the perfect way to showcase axolotl regeneration.
Click this link to learn more about axolotls: https://scratch.mit.edu/projects/537030550