Interactive 3D plush whale playground with soft-body physics

GOAL: Build an interactive 3D plush whale playground in the browser. MOTION: Make it round, fluffy, and hilariously goofy, with oversized googly eyes, a wide opening mouth, tiny fins, and a floppy tail. No thoughts, just krill. Use soft-body physics so the whale squishes, stretches, wobbles, and springs back when dragged. Let me grab its fins and tail, poke its belly, comb its fur, feed it krill, trigger a tiny fountain, and make it do a ridiculous flip. Render dense plush fur, visible stitching, soft shadows, and a fabric-lined mouth. Add blue, orca, and lavender color options, plus controls for stuffing firmness, fur length, and animation speed. Present it as a playful material study on a warm cream background, with elegant serif typography and a compact control panel. Keep the whale as the main focus. All interactions should work, and the result should feel tactile, polished, and genuinely funny.