A Crack Was Heard

It’s a warm sunny day so all the kids hitch hiked down to the sandy beach on the shore of Lake Superior.  I decided to swim across the Portage Canal between the two light houses at the entrance.  The quarter mile distance was near my limit and after a rest on the far side, I had to swim back.  It was a long walk on the rocky breakwater. As my feet were getting sore, I decided to dive in and float back to the beach. With no regard to the depth of the water my head hit the bottom.  Crack.