What Am I Riddles

Question: What has an eye but cannot see, takes time to generate, and can dissipate in seconds?

Question: I climb to the top I dive below I return again For another show.

Question: What's wet and dry Takes you low Moves real fast And kills you slow ?

Question: I'm as small as an ant, as big as a whale. I'll approach like a breeze, but can come like a gale. By some I get hit, but all have shown fear. I'll dance to the music, though I can't hear. Of names I have many, of names I have one. I'm as slow as a snail, but from me you can't run.

Question: Who hunts in a crowd, who hides in plain sight, who do you trust even though you don't know him?