Bioluminescent Plankton: Disturbance Flash (2D)

This 2D companion reimplements the 3D bioluminescent plankton scene as a flat, top-down field of glowing dinoflagellates in dark water. Drag the mouse or a finger across the canvas to sweep a moving disturbance through the plankton field, click for a single expanding splash ring, or click and hold to build a growing splash the longer you keep the button down — every cell caught by a ripple flashes cyan-green and fades smoothly, just like real mechanically-triggered bioluminescence. Switch between calm water and surf to change the background swell, then tune sensitivity, disturbance radius, glow hue and plankton density to explore how each factor shapes the light show.