How do I find out what .class file handles water (or liquids) ?

[AndyMASH]

I'm trying to make the underwater in minecraft clear. NOBODY ON THE WHOLE GODDAMN INTERNET CAN TELL ME HOW TO DO THIS without optifine and so I have to start to learn how to frickin' mod just for this tiny little thing. But I need to start from somewhere, so I need a list of what .class files do or to know which .class file handles the liquids/water

 

[jordsta95]

Well you physically CAN'T.
However, if you use Mariculture's diving gear, you get a clearer view.

 

[mattp_12]

You also could choose to use a command block (run the command /give @p command_block) and put "/effect @p night_vision 999999 1" and apply a redstone signal. To disable this, type this command in chat: /effect @p clear.