Pond Frogs is a playful, kid-friendly animation of a lily-pad pond: frogs sit and jump between pads on a procedurally scattered layout, and every landing sends out a spreading circular ripple across the water. It is designed as a gentle first look at how animals move and how waves travel outward from a disturbance, rather than a precise physics or biology model.
A pond scene with ten scattered lily pads plus a centre pad, populated by frogs that wait on a pad for a random timer to elapse, then hop in an arc to another randomly chosen pad. Each landing triggers a growing ripple ring drawn outward from the splash point, and the panel keeps a running count of jumps, ripples, and current frog population.
Use the Frogs slider (1–8) to set how many frogs live on the pond at once, and Jump Speed (Slow, Medium, Fast) to control how quickly they leap between pads. Press Add Frog to drop in one more frog up to a maximum of twelve, or Reset to scatter the lily pads again and start fresh. A rotating fact box shares a new piece of frog trivia every time you add a frog.
Frogs jump using their powerful back legs, covering up to ten times their own body length in a single leap — the Goliath frog, the largest frog species alive, can leap around 3 metres. They are cold-blooded, so they move faster in warm water and slow down in the cold, and they breathe partly through their moist skin as well as their lungs, which is why they must stay near water.
Pond Frogs is aimed at younger children (roughly ages five to ten) and introduces two simple ideas: how frogs move around a pond by jumping between lily pads, and how ripples spread out in circles from the point where something disturbs the water. It favours colourful, readable animation over precise scientific detail, making it a gentle entry point before exploring the more advanced wave and fluid simulations on this site.
Each frog waits on its current lily pad for a randomly chosen timer to count down, then picks another pad at random and hops toward it along a simple arcing path. Once it lands, the timer resets with a new random duration, so frogs jump at staggered, unpredictable intervals rather than all at once, keeping the pond scene lively and varied.
Every landing splash launches an expanding ring of ripples centred on the landing point, growing outward and fading as it spreads — a simplified illustration of how a disturbance on a water surface creates waves that travel outward in all directions equally, similar to dropping a stone into a pond.
The Frogs slider sets how many frogs are active on the pond, from 1 up to 8 at start (and up to 12 using the Add Frog button), which changes how busy and crowded the scene feels. Jump Speed switches between three preset multipliers — Slow, Medium and Fast — that scale how quickly each frog completes its hop from one lily pad to another.
The rotating fact box highlights that frogs can jump roughly ten times their own body length using their strong back legs, that they are cold-blooded and become sluggish in cold water, that lily pads support a frog's weight because their broad flat shape spreads out the force, and that the Goliath frog — the largest frog species in the world — can leap about 3 metres in one jump.