I was down on the marsh this morning, otter watching. The River Stour is low, flat calm, and fairly clear. Six otters swam in circles, underwater. I think there is a holt in the riverbank, because the otters were disappearing under the bank vegetation and not coming up for air. Now and again one would surface, but there was no indication of when or where, and their time on the surface was minimal. Nice to see them, though.