Nimbus learns how to weather her cloudy moods and accept help from her best friend, Kelp, in this charming and gently encouraging picture book companion to the New York Times bestselling Not Quite Narwhal and Perfectly Pegasus. Nimbus has so much fun being Kelp's friend! Their days are filled with games, sunshine, and a whole lot of rainbows. Only, Nimbus can't stay sunny all the time; in fact, some days she's downright...