It's taken me over 18 months of living on Berneray before I saw my first otter. Footprints in the sand, many times, but no otter. And then, a few weeks ago, one such animal was swimming lazily past the bottom of my garden. Amazing.
I'm never going to get a photo of one of these unless I am exceptionally lucky, so here's a picture taken, on Berneray, by Flickr user Chris Barker during a trip to various Hebridean islands last month: