W3Schools Tryit Editor

<!DOCTYPE html>
<html>
<head>
<style>
  #frameDiv {
    width: 400px;
    height: 170px;
    margin: 20px;
    position: relative;
    border: solid black 1px;
    background-color: rgb(205, 242, 205);
  }

img {
    width: 70px;
    offset-path: path('M 50 80 C 100 -100 200 220 350 150');
    animation: moveImg 4s 1s 3;
  }

svg {
    position: absolute;
    height: 100%;
    width: 100%;
    left: 0;
    top: 0;
  }

@keyframes moveImg {
    0%    {
      offset: path('M 50 80 C 100 -100 200 220 350 150') 0% auto;
    }
    100%  { 
      offset: path('M 50 80 C 150 80 250 80 350 80') 100% auto 180deg; 
    }
  }
</style>
</head>
<body>

<h1>The offset property animated</h1>

<p>Here, the offset shorthand property is animated with a gradual change in offset-path, offset-distance and offset-rotate.</p>
<p>The dashed line is the initial path, and the solid line is the path the fish transitions to at the end of the animation.</p>

</body>
</html>