Finding Dory that cried out to be made." Conservationists warned that, very much like "Finding Nemo", the film could lead to uninformed customers buying blue tangs for home aquariums. Blue tangs cannot be bred in captivity and have to be caught in the wild. They are related to surgeonfish and exhibit razor-sharp spines on both sides of the tail that can inflict formidable wounds. While promoting the film, actress Ellen DeGeneres reminded audiences that Nemo and Dory's real-life home, the Great Barrier Reef, is under enormous threat, mostly due to coral bleaching, a process induced by climate change, which has killed coral
Finding Nemo for tropical fish skyrocketed after the film's release, causing reef species decimation in Vanuatu and many other reef areas. After seeing the film, some aquarium owners released their pet fish into the ocean, but failed to release them into the correct oceanic habitat, which introduced species that are harmful to the indigenous environment, a practice that is harming reefs worldwide. "Finding Nemo" was released on VHS and DVD on November 4, 2003. The DVD release included an original short film, "Exploring the Reef", and the short animated film, "Knick Knack" (1989). It would go on to become the best-selling DVD