If you are doing it right, you can jump the crystals on the left side and the cliff on the right side with beast form and no speed-food.
If it's still not working, try a hot soup or a royal soup.
Jumping very high out of the water is working best when you do a normal swimming (holding the left mouse button) and short before the surface you click it, to get some extra speed. If you aim right, you land on the crystal on the left side of the cliff and fromthere you can jump in the bubbles and up you are.

For Jumping up some walls you have to plan your next jump fast enough so that you aren't falling down from the wall. If you can't jump over a crystal you can build some stairs with the natural form, even if it isn't catapulting you away.