Otter Learning To Swim

Tarka the Otter, by Henry Williamson, published 1927, gives a vivid portrayal of an otter's life in the rivers of Devon at a time when otter hunting was still legal. It was made into a film of the same name in 1978, co-scripted by Gerald Durrell and narrated by Peter Ustinov.
Emmet Otter's Jug-Band Christmas is a children's storybook by Russell Hoban that was adapted by Jim Henson and Paul Williams into a musical television special and by The Jim Henson Company into a live musical stage show.
In Brian Jacques' Redwall series, otters are depicted as kind, intelligent, creatures on land and sea. However, when it comes to defending their abbey home, they are fierce and strong warriors.
PB&J Otter, a Disney animated cartoon, ran from 1998 to 2000. Its main characters were otters.