I created this as a feature in WeatherLah a few months back. WeatherLah is a Singapore weather app designed by @isnav and done by an intern at buUuk. But this feature will probably need some tweaking before it makes it into the app.
This prototype shows tide levels at different hours.
TIME -> TIDE LEVELS
But the navigation is not flexible enough to easily show when is high tide and low tide.
TIDE LEVELS -> TIME
The animated frog is a frame-by-frame animation, each frames drawn manually in Photoshop. Had a lot of fun working on this.