While hiking my new property with my girls today I came across some of what I'm pretty sure are oyster mushrooms. They checked all the boxes - correct color and size, oyster shape, smooth cap, decurrent gills, shelf-like clusters, little/no stem, white flesh, growing on dead hardwood, smells a bit like fish when cooking. I sautéed them and ate a small piece tonight. If I'm not dead tomorrow I'll eat a full mushroom and see what happens.
I don't believe there are any poisonous mushrooms that match the description but I guess we'll find out. Tasted pretty good, although I over-salted a bit.