Beginner Gardening: Is something wrong with my cucumbers?, 0 by JLEM

JLEM wrote:
I was looking at my cucumbers this morning and I noticed what looked like little white spots on the leaves. This afternoon I took a closer look, and it appears that the white spots are areas where the leaves are thinner. When I turn the leaf over, you can see light shining through these spots. Just to clarify, these are not holes. Does anyone have an idea of what might be causing this and what I should do? Is this normal for cucumbers?