A while back I made a small test for a swimming game.
I have made a small update from that here:
That goal was to make the swimming part of the game seem more believable. And to have water movement but less laggy.
I added in the idle animations and made the body seem partially submerged in the water.
And instead of the water effect filter to add ripples I now have the white wave thing to give the water a sense of movement.
I also made the resolution larger.
It took be about 30 seconds to complete the first course.
You can ignore the red dot on the Maiko animation.