Written by Ted J. Rulseh

When you look out on your favorite lake, what do you see? Beautiful blue water? A place for a refreshing dip on a summer day? A surface on which to paddle a canoe or kayak? Favored spots to catch fish for sport or dinner? Your lake is all this, but also much more. A lake is a fascinating living system, full of mysteries and things to discover, if you look closely. Here are ten things you may not know about the world beneath the waves.