By swimming towards an object where Link normally jumps to get out of the water (like a dock), but stopping before actually jumping out, you can trick the game into storing the jump animation, and then use it somewhere else.
By using this technique, it is possible to get on top of things with low height. A use of it is accessing Turtle Rock without saving the Turtles.
If any animation other than simply swimming is started while the jump animation is stored, the animation storage will be cancelled. This includes diving, swimming fast, and getting hit by enemies.