During the Credits
Right after the title card “The End”…
…The dentist, Dr. Sherman, complains to Barbara about the AquaScum 2003 automatic fish tank cleaner as he inspects it. When he looks at the counter where he had set the fish tank’s animals in preparation of manually cleaning the fish tank, he discovers that they’re gone. The extra scene cuts to a shot of the missing Tank Gang, each animal in its own plastic bag, floating in the harbor. They’ve escaped via Gill’s original plan, which ended at this step and thus failed to address how they would get out of their bags. Bloat asks, “Now what?”
Various scenes and characters from the movie make appearances all throughout the rest of the credits of Finding Nemo.
After the Credits
After the credits of Finding Nemo, there is dedication to Glenn McQueen, a Pixar animator who died in 2002 and also whom Lightning McQueen in Cars is named after, and an extra scene that shows the small scared green fish (that was brought to the sharks’ meeting) nearly getting eaten by the anglerfish (the one with the glowing bait). Instead, the tiny fish eats the anglerfish.