backstory:

 ** I was playing survival when I came across a pond. It had floating tall grass above it. To make sure it wasn't a world generation error, I recreated the world. It was still there. 

recreation:

make a new world on this seed:

-4977636324086404853

and go to the coordinates [x=49,y=71,z=-79]

there will be a pond with tall grass floating above it.