With a yell, you charge down the platform towards the student. Not expecting the attack, he flings his arms up to protect himself and the squirt gun slips out of his hands and falls into the tank. The powder goes flying as you smack into him. He grabs your shoulders and you grab the sides of his head. You fling each other around on the narrow walkway, pushing back and forth, until he reaches his fist back and punches you right on the side of your head. You vision swims and you find yourself stumbling towards the edge. The student punches you again in the stomach, intending to shove you in the pool, but you grab him at the last second. "NOOOOOO!" he yells as you two tumble off the edge of the walkway and plunge into the deep tank below.
You swallow huge amounts of rich, mineral-tasting water. You struggle to the surface and break through, gasping for breath. You kick your legs frantically back and forth, but notice that you seem to have a hard time moving them... you look down, puzzled as you are treading water.
You dive down and open your eyes. You open your mouth again (swallowing more of transformational water) in horror as you see your thighs, ankles, and feet look incredibly swollen, almost three times their normal size. Closing your mouth quickly, you watch in horror as your huge thighs and legs are snapped together and the skin and flesh melt between them, leaving you with a huge lump of flesh. The bottom part pushes out, becoming longer and flattening out. It grows larger and larger until you have a gigantic fluke at the end of the place where your legs used to be. You frantically try to swim up, but you can't, as the whole mass is too heavy to move at once. You sink towards the bottom of the tank. You feel yourself going faint... you're about to pass out when, suddenly, it feels like your lungs have filled with air... even though you're underwater.
You reach up your considerably fatter and flatter arms and touch the side of your swelling neck with your rapidly shortening fingers. You have gills... you open your mouth in shock and as you do all your body hair falls out and your face becomes incredibly swollen. The entire front side of your head pushes out and expands so far in front of you your eyes grow small and are forced to the sides of your head. Your human teeth spill out of your huge maw in a cloud of crimson blood as sharp, dagger-like teeth grow in your gigantic mouth. Your head expands and pushes out more to accommodate your orca features. Your neck gets so fat and round that it appears you have none at all, like it just goes straight from your torso to your huge... snout and melon?
You still can't move, and you sink to the bottom of the tank, an eight foot long huge flesh colored blob with a whale head. That would soon change, however, as your entire body balloons outward at an alarming rate, your skin turning shiny, slippery, and thick, becoming blubber. Your clothes shred within nanoseconds under your massive, massive form. Your huge member is sucked into your body, turning you female. Your blubber turns jet black all around your body except for your underbelly, spots above your eyes, and your fluke, where it is stark white. The pool gets smaller and smaller as you grow more and more, getting longer and longer, rounder and rounder, and fatter and fatter. A huge pulling sensation at the middle of your massive back is accompanied by a huge dorsal fin, easily six feet tall, growing out. Your leg bones and muscles disappear completely, forcing you to swing your huge fluke up and down to move around. Your arms flatten out, turn jet black, and grow into huge front flippers. You grow longer and bigger, body sleeking out and becoming slippery, devoid of any imperfections. Your massive belly, back, face, and entire body give one final bulge outward.
You swim around in the now incredibly small tank, a huge full grown adult orca. You swim to the top and poke your head out, emitting a huge amount of water from your blowhole. You swim down to the bottom of the tank and spy a lone clownfish swimming around frantically. This must be the college student. You lunge forward through the water and quickly catch the fish in your mouth. You attempt to bit it in half, but you accidentally swallow him whole.
You go to the surface again and hear a door opening. A man in a gray suit (everything looks gray, you're colorblind now) stands on the railing and smiles wickedly down at you. "I'm glad we've got our new attraction... I knew leaving those doors ajar would attract and idiot like you. You'll have to perform here for a long, long time before I even consider changing you back. When the crowds come in tomorrow, you'll blow all that transformative water through your blowhole all over them, and I'll have the best stocked zoo in the world." The man laughs and you open your gaping maw to protest but all that comes out is a high pitched whale screech.