As luck would have it I was in the right place at the right time. I spotted an otter swimming in a coastal lagoon between Newport and Westport. It was once an a natural inlet of the sea but had a seawall had been built creating a flooded lagoon. The lagoon or saline lake has a channel which flows into the sea under the seawall. A steel flap at the base of the seawall stops the flowing tide from flooding the lagoon. The otter was heading for the sea inlet. Otters are difficult to see, especially when you want to see them. Sometimes though, if you are lucky and observant, you can see them first. Then all you need to do is, stop moving, watch, wait and be quiet.