They couldn't be more different from each other
>Finding Nemo relies entirely on the music score by Thomas Newman, with only one lyrical song in whole movie (a cover of "Beyond the Sea" by Robbie Williams that plays in the credits)>Shark Tale has a music score by Hans Zimmer, but it relies almost entirely on lyrical songs by a ton of artists (Christina Aguilera, Missy Elliott, Sean Paul, Ziggy Marley, The Five Stairsteps, Ludacris, Mary J. Blige, JoJo, Timbaland, Justin Timberlake, Avant, Elvis Presley, India Arie, Cheryl Lynn, D12, The Pussycat Dolls)