Sprouting Acorn

We have two California Coastal Live Oaks in our yard. This year they produced a bumper crop of acorns - enough to make several breakfasts of acorn pancakes. I knew that there would have to be many sprouts if we got enough rain but I was really astounded by the number. They have sprouted like weeds. A. This one isn't even covered by mulch and it has sprouted and shot out a tap root. It is really cool how the meat of the nut is actually photosynthesizing.