Amelia shuddered as another wave of increasingly strong growth washed over her titanic fish body.
Her kind at their largest were barely taller than a human child. She was now well into being measured by the foot in double digits, and steadily growing larger and larger with every erotic pulsation.
The latest one was deliciously strong. The 22 foot tall anthro rainbow trout gasped and clutched the tank in which she had nearly been reduced to a complete animal. She felt the metal fixtures groan against the pull of her immense hands as she increased to 25 feet tall.
Panting, her vaginal muscles still twitching with post-orgasmic delight, the busty fish woman realized with mounting alarm that not only had she achieved her desire to be taller than an orca whale, she was now too massive to even leave the room.
She hunched down in the room, another size spurt pushing her up to 28 feet, and struggled to snake her way around the vat in the center of the room. Soon, she was lying on her side, enormous breasts slapping down onto the grated metal floor with a thunderous thud.
The tingle. Growth. Another. Growth. She could do nothing but ride out the pulsations and hope for them to stop, but no end was in sight and she was very rapidly running out of room to grow. She felt the heel of her massive flipper foot smash a metal cabinet in like it was made of foil. Her enormous ass cheek began to crush a wall.
She gulped. The next pulse might destroy the room! Too scared to move, she glanced around nervously and tried to hold it in. She managed, for a few moments, to hold back the next growth spurt like one holds a sneeze, but this seemed to only increase its power when she finally lost control. Destruction, cracking, powder from collapsing concrete, the crunching of metal. She was now a 40 foot tall fish woman and the room had run out of available space.
The trout felt herself constraining and knew what was about to happen as her giant body began to expand again. Her rib cage hit the roof. Her shoulder bit into the ceiling. She cried out as metal and rebar and wires tangled themselves around her and pressed against her expanding flesh. It hurt like hell, she felt she was being crushed.
And then… a wire broke. Electrical current buzzed through her body. The trout gyrated wildly and felt herself smashing up more of the room. Her growth exploded. Whatever electricity that was flowing into her seemed to supercharge the process. The next thing she knew she was covered in dust and debris as she burst through the building itself. In the fetal position, in the wreckage of the twisted lab, she sat up and found herself exposed to the late evening, staring down at shocked onlookers.
They were toys to her, she realized. She could grasp the people and animals in her hand. Spurt after electric spurt hit her body. She had surpassed her goal of being taller than a whale. Even those massive giants would only coke up to her knee now. She was almost 50 feet tall and still growing, even faster than before it seemed.