Little By Little, by Amber Stewart

Little By Little is a sweet story about an otter who hasn't yet learned to swim. He recognizes that he has many things he can do, but feels bad that he can't swim. His sister kindly helps him by encouraging him to take small steps forward -- first hopping in water, then floating, and eventually swimming. It's a nice way for kids to see that growth comes little by little. It also has lovely illustrations!