Otter Otter There are 12 species of otter alive today. The lifespan of an otter is 16 years. Video Playerhttps://blogs.glowscotland.org.uk/ab/public/islaywildlifeproject/uploads/sites/1803/2023/06/14174743/Otter-video.mp4Media error: Format(s) not supported or source(s) not foundDownload File: https://blogs.glowscotland.org.uk/ab/public/islaywildlifeproject/uploads/sites/1803/2023/06/14174743/Otter-video.mp4?_=100:0000:0000:00Use Up/Down Arrow keys to increase or decrease volume. A video of Otters on Islay Otter pups can swim when they are young, but they float. The otter has the densest fur out of all mammals.