Finding Nemo installs a new high-tech filter before the Tank Gang can escape. Marlin and Dory exit the East Australian Current and are engulfed by a blue whale. Dory communicates with the whale, which carries them to Sydney Harbour and expels them through his blowhole. They meet Nigel, who helps the pair escape from a flock of relentless seagulls and takes them to the dentist's office. Darla has just arrived, and the dentist is handing Nemo to her. Nemo plays dead to save himself as Nigel arrives, terrifying Darla and throwing the office into chaos. After Nigel is violently thrown out by
Forgetful functor Forgetful functor In mathematics, in the area of category theory, a forgetful functor (also known as a stripping functor) 'forgets' or drops some or all of the input's structure or properties 'before' mapping to the output. For an algebraic structure of a given signature, this may be expressed by curtailing the signature: the new signature is an edited form of the old one. If the signature is left as an empty list, the functor is simply to take the underlying set of a structure. Because many structures in mathematics consist of a set with an additional added structure, a forgetful