Octopus

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 502.7 Hz, 69 cents flat of C5, 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 squirt ink.

An octopus is a soft-bodied sea animal with eight arms lined with suckers. It has three hearts and blue blood, no bones at all, and it can change the color of its skin in a split second to hide or to signal.

When something scares it, an octopus squirts a cloud of dark ink and jets away behind it. Tap this one and it does just that: the ink billows out while it shoots up and away with its arms streaming, then it drifts back as the ink thins. You can pick its color in the Splash tab. With ✋ Hands-on on, drag its body and the arms trail behind and curl back; pull an arm and let it go.

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.