The pebble and rock fabric is Nature Scapes style D900 by Hoffman. That fabric goes from big rocks to smaller rocks to pebbles then sand and then water or sky. So that was the major part of the shore.
The gray and white fabric with sand pebbles is called Riverbed by Makower UK. I used another rock fabric, but I don't know its name.
I either got them at Big Horn Quilts or Hayloft Fabrics online. I've had them for over a year. I have lots of fabric for landscapes.