Virus

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 374.8 Hz, 78 cents flat of G4, the nearest tine on the comb. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap it to make copies that bud off and drift away.

A virus is a tiny bundle of genes inside a shell of protein, usually smaller than a bacterium. It cannot grow or copy itself on its own: it has to get inside a living cell, which then makes new copies of it. The spikes on its shell help it latch on to the right kind of cell.

This one's spikes sway gently. Tap it and a wave ripples through them, and two smaller copies bud out from behind it, drift apart and fade away. Most viruses are so small that only an electron microscope can show them.

Made in Splashery. Its code is MIT.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.