This is the part mentioned above. I thought I was supposed to take the fish and jump from the right side of the screen up to that column, then hop from it to get to the star. Nope. And it begs the question “why is there even a secret tunnel that takes you to the red fish” hidden under the middle of the under the center of the underwater building? If not for that, I’d never spent 30+ minutes trying to make that (seemingly impossible) jump.