80-second glass-and-gold animated mosaic film

Make an 80 second square animated film as a single HTML file, using WebGL2 and plain JavaScript, with no libraries and no image, font or audio files. It should look like a glass and gold leaf wall mosaic whose tiles were never glued down, so they can lift, flip, fly and click back into place. Figures are flocks of tiles, so a fish swims by its tiles swimming