Slug Fest

My string beans, wax beans, and lima beans are barely out of the ground, and they’re already being eaten by something! This morning, while performing my biweekly close examination of all my plants and trees, I discovered that several of my bean plants are sporting half-eaten leaves (as my wax beans in the picture above) or are merely spindly stalks sans leaves. I see no signs of insect infestation, nor bugs themselves. So, what is attacking my beans? Find out!