The new amazing shaders of water, which was ported from PC version of Minecraft. They have more realistic view and makes water natural in MCBE. All the lakes and rivers are smoother and have a big difference from previous vanilla shaders, especially properties of physic in-game.
Please pay attention, that this Water shaders will take more FPS than it was before. It is depended on characteristics of your device, which you plan to use for game. Basically devices with medium characteristics is acceptable for it.