The user wants me to create a single HTML file that simulates a glass aquarium cracking and bursting. This is a complex physics simulation that needs to include:

1. A glass aquarium with a side panel
2. A visible crack that can be dragged vertically before triggering failure
3. Water escaping through the opening with flow based on depth (Torricelli's law)
4. A curved water jet affected by gravity
5. A spreading puddle that collides with room boundaries
6. Fish, rocks, plants, and a floating toy with different physics (density, buoyancy, drag, current)
7. Objects transitioning from underwater to airborne to floor collisions
8. Fish attempting to swim against current before being swept out
9. Glass fragments with angular velocity, collisions, and water resistance
10. A visible waterline that lowers continuously

Let me build this step by step:

1. Canvas setup
2. Physics engine for objects (position, velocity, acceleration)
3. Water simulation (water level, pressure at depth, flow rate)
4. Particle systems for water jet and puddle
5. Objects (fish, rocks, plants, floating toy)
6. Glass crack and fragmentation
7. User interaction (drag crack)
8. Main animation loop

I'll use HTML5 Canvas with vanilla JavaScript. No external libraries or CDNs as requested.

Let me create this comprehensive simulation.

I'll create a comprehensive aquarium burst simulation with all the physics you requested. Let me build this step by step.

I've created a comprehensive aquarium burst simulation. Let me verify the file was created correctly and summarize what I built.

I've created a complete single-page aquarium burst simulation with all the features you requested: **Physics Features:** - **Water flow**: Uses Torricelli's law - jet velocity scales with √(depth), so lower cracks produce stronger jets - **Curved water jet**: Particles follow realistic parabolic trajectories affected by gravity - **Puddle spreading**: Water accumulates on the floor and spreads horizontally with wall collisions - **Object physics**: Each type has unique density (fish=1.05, rocks=3.0, plants=0.3, toy=0.4, glass=2.5) - **Motion transitions**: Objects properly transition between underwater drag, airborne motion, and floor collisions - **Fish AI**: Fish swim normally, then struggle against the current, trying to escape before being swept out - **Glass fragments**: Shatter with angular velocity, bounce off surfaces, and experience water resistance - **Visible waterline**: Lowers continuously as water drains, not all at once **Interactive Features:** - **Drag the crack**: Click and drag the red handle on the right to position the crack vertically - **Pressure indicator**: Shows expected pressure based on crack height (lower = higher pressure = stronger jet) - **Burst button**: Triggers the tank failure - **Reset**: Start over with a fresh tank **Visual Elements:** - Glass aquarium with realistic transparency and shine - 5 colorful fish with tail animations and struggling indicators - 6 rocks with irregular shapes - 4 swaying aquatic plants - 1 rubber ducky floating toy that bobs at the surface - Bubbles rising from the bottom - Glass shards flying out on burst - Water particles forming curved jets and puddles The simulation runs entirely offline with no external dependencies!