Putative otter, millpond

My walking shoes didn't go on until late afternoon, and though I had my camera with me, I suspected that it was nearing too-dark to photograph anything. When I got to the millpond, about all I could see was the last of the sunset and the reflections of trees on the still water. But there was something else—a Vee on the surface as a critter made its way, just under the surface, across the pond. I needed my supplementary lights and my bigger flash to take a decent picture and there was, of course, no guarantee that I'd have been able to spot anything in the photo. But, unexpectedly, the critter popped up its head and, using my pop-up flash, I captured it as it eyed me. This is in the same area that, last March, I got pictures of what the experts feel was a Mink, but in looking at the image, I think the face is too broad. There's also white under the nose and perhaps behind the ears, although that could be an artifact of the flash. I have no idea whatsoever how to interpret what looks like a white tail tip. Put all those characteristics together and I'd say we are looking at an otter. Definitely a return visit, with the right equipment, is in order.