I created the water.
In a new layer I used differential clouds. Then motion blur, radial blur. Chrome, emboss, and then hue-saturation with colorise to get the proper colour.
step 3 of 5
I used liquify to transform the peppers, dodge and burn. Second copy pasted layer with opacity 53% to make part of the worms appear like underwater.
step 4 of 5
I expanded the canvas and filled with gradient tool.
step 5 of 5
I used the tomatoes to transform them into weeds (free transform, liquify).
In a new layer I added the yellowish fog and the shades of the weeds far away.