Billow
A sea of soft waves marched into fog, from a low camera
Two crossed sines with a slow swell riding on them, raymarched from a camera tilted down toward the horizon. Distance is fog: the wave colour gives way to the horizon colour as the march runs long, and the crests catch a third colour by height. The camera yaws and pitches a little with the pointer, which is what gives the sea its depth.
Rendering cost: heavy. A raymarch or escape-time loop per pixel: cap the pixel ratio, or keep it to a card rather than a fullscreen background. How to tune it
Tune Billow free. Take it when you are ready.
The background itself, with your settings already saved in, ready to drop into your site — this one and the other 60. Paid once, no subscription, and every background added later is included. What you get.
$9.99$19.99once
No account needed — pay first, sign in after.