Arctic Terns were high on my target list for Iceland, and I wasn't disappointed. They were everywhere. I particularly liked the imagery of them flying around on the icebergs -- this one from the glacial lagoon at Jokulsarlon. Light was low, but a bit more SS probably would have helped. Catchlights added.
D7200, 500f4 + 1.4 TC, ISO 2000, 1/1600s @ f9 manual, gitzo and mongoose.