You wake up the next day and hope that yesterday was just a bad dream and that you are back in your bed. Nope, you are still in the Giant Fish Tank. Apparently, you also have to be in the Giant Fish Tank always now.
Your Giant Fish Tank is wheeled all the way to the Marine Institute, while they are studying you your feet and legs suddenly feel like they are fusing together, in fact they are. They combine into a tail, a Dolphin Tail that is. "OH NO!" You say, you must look like a freak to everyone else now, you have a human body except that you now have a Dolphin Tail. At first people might mistake you for a mermaid because of your tail and your female body but you are not because your tail is not scaly or fish-like in the slightest, it is instead smooth and fleshylike.
But wait having a Dolphin tail also means that you can't wear pants or underwear of any sorts because they will no longer fit. You are now bottomless, your bottom half is entirely naked, meaning that your Vagina, Urethra, Clitoris, and Anus are all naked, nude and exposed. "YIKES!" You say.
Later your Giant Fish Tank is wheeled to school and you are taken to Anatomy and Biology class, the students are all amazed that you look human except for your naked Dolphin tail.
Later your Giant Fish Tank is wheeled all the way home and you sleep in it. You don't know what tommorow will bring.