When it comes to the Finding Nemo franchise, Pixar really seemed to do it's research. Their fish science went the distance to make the movie feel as authentically under the sea as possible - mostly.

For years, 3D models, both in CG-animated movies ... from human flesh to the suckers on an octopus. Pixar moved underwater for "Finding Nemo," so the studio had to nail the appearance of light ...

The folks at Pixar have spent two decades learning how best to tug on our heartstrings, from 1995's Toy Story, via Finding Nemo, WALL-E and Up, to this year's phenomenally popular Inside Out.