Watch Springwatch - Guide to Otters for Free: How to Stream the Movie Online at 123Movies. . The otter is one of the UK's most charismatic yet enigmatic animals. Living not only along our rivers but also at the coast, otters have remarkable adaptations to a life both in and out of water. This documentary brings you the very latest scientific discoveries as well as a review of the turbulent history of the otter in the UK. It looks like the otter is making a steady comeback around the country but not everybody agrees this is good news.