A clown fish named Marlin,
(Albert Brooks)
, lives in the Great Barrier Reef. Marlin loses his son, Nemo,
(Alexander Gould)
, after Nemo ventures into the open sea,
despite his father's constant warnings about many of the ocean's dangers. Nemo is abducted by a dentist,
(Bill Hunter)
, that is diving by the reef and he is netted up and brought to a dentist's office in Sydney. While Marlin ventures off to
try to retrieve Nemo, Marlin meets a fish named Dory
(Ellen DeGeneres)
, a blue tang fish suffering from short-term memory
loss. The companions travel a great distance, encountering various dangerous sea creatures such as sharks, anglerfish, jellyfish,
meeting turtles, and ridding the E.A.C. in order to rescue Nemo from the dentist's office,
which is situated by Sydney Harbor. While the Marlin and Dory are doing this, Nemo and the other sea animals in the dentist's fish
tank plot a way to return to Sydney Harbor to live their lives free again.