'That's not really very interesting.'Īs if on guard against such jadedness, the makers of 'Shark Tale' have ensured that their movie is about as many things as possible, including a fish who gets lost, though not quite in the way that Nemo did. In anticipation of the novel delights of 'Shark Tale,' my daughter was happy to revise her earlier high opinion of 'Nemo.' 'It's about a fish who gets lost,' she said with a shrug. The subject came up naturally enough, since the movie we were about to see, which opens nationwide today, is DreamWorks's attempt to follow Disney and Pixar into the lucrative and technologically demanding world of underwater computer-generated 3-D animation. On our way to a screening of 'Shark Tale,' my daughter and I fell into a discussion of 'Finding Nemo,' a movie she has seen several dozen times.