An Optical Illusion?

It was cold and silent as we walked down the dock in the gray pre-dawn this morning. No birds - gone for the winter. No people - most of them have left for the winter, too, their boats hulking under white shrink-wrap. No little splashy sounds of moving water, it's immobilized under a skin of ice. I wanted to hurry inside for warmth but was stopped by this fallen oak leaf. It looked so much like a gecko sunning himself, and for a moment I wasn't in Maryland on the chilliest day so far this winter, but on a Caribbean island.