School of Fish

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 1700.9 Hz, 441 cents sharp of E6, 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 for a bait ball. Hands-on: drag through the school and the fish dart away.

A school is a big group of fish swimming together, all turning at once. Each fish keeps pace with its neighbors by watching them and by feeling the water move along a line of special sense organs down its sides. Being one of many makes it much harder for a hunter to pick out any single fish.

These 48 fish each swim on their own. Tap it and the school tightens into a spinning bait ball, the shape small fish make when a hunter comes near, then bursts outward in every direction and swims back into place. Pick silver or tropical fish in the Splash tab.

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.