'Finding Nemo' is, on the surface, a story about a brave little fish being reunited with his father. Looking at it that way is glossing over the real story, though - which is one about the murder of almost an entire family.
Right at the start of the film, Marlin and Coral are celebrating the arrival of over four hundred eggs. They're going to have a huge family! Then, everything is ruined as an evil Barracuda comes along and eats 399 of them. This is infanticide in a Disney movie!