To Lulu,  you're able to shrink about half your size,  and your head shrinks even less, since it houses your brain.  You jump and drop,  no invisible platform to save you from the water below.  Your adhered tail allows you to sort of Blob your way back onto land,  but only because Mathew cautiously steps on the end of your tail,  otherwise,  even your sticky grip would not have held to the smooth stone.  What you do notice though, is that directly below you,  there is small section of frothing,  bubbling water, and a ladder built into the stone behind you,  making it very easy to climb back up.  There doesn't seem to be any other bubbling sections of water except directly below the entrance platform.<br/><br/>After Lulu is reeled back in, Mathew inspects the gap.  "It's only a short distance and a big platform.  We could jump it. I mean... I could pretty easily..."<br/><br/>(Those platforms have a literal black square in the center. )