Pixar’s 'Finding Nemo' was a monumental technical achievement because of the difficulty of animating water. In 2003, creating realistic transparency, light refraction, and suspended particles in an underwater environment was a major computational challenge. The film grossed $940 million and became the best-selling DVD of all time. It was so successful that it caused a sudden surge in the demand for clownfish as pets, which actually impacted wild populations—a phenomenon known as the 'Nemo Effect.' The film won the Academy Award for Best Animated Feature and solidified Pixar as a studio that could dominate the box office and the home video market simultaneously.