A new documentary that alleges animal cruelty and negligence on the part of marine park SeaWorld has apparently caused the creators of "Finding Dory" to have a change of heart regarding its ending.

The "Finding Nemo" sequel, featuring the voices of Ellen DeGeneres and Albert Brooks, is still in the early stages of development - but according to The NY Times, an orignal ending that took place in a marine park has been revised. "Pixar decided to restructure that part of the story so that the fish and mammals taken to its aquatic center have the option to leave," author Brooks Barnes writes, citing an anonymous Pixar employee.

“Blackfish,” directed by Gabriela Cowperthwaite, debuted at Sundance earlier this year to strong word-of-mouth and excellent reviews. It hit theaters late last month and is currently enjoying a spectacular 98% approval rating on Rotten Tomatoes. It's also been a public relations nightmare for SeaWorld, which has gone on the offensive and presented critics with 8 assertions as to why the film is "dishonest" (all of which are countered by the filmmakers here).

Earlier this year, Cowperthwaite told IndieWire that she never intended to film a documentary about whales in captivity. It was only after the unfortunate death of SeaWorld trainer Dawn Brancheau in 2010 from a notorious orca named Tilikum that she decided to dig deeper.

"I was a mom that took her kids to SeaWorld," she said. "That's my entry point, unfortunately. I really didn't know anything about it. And another thing that always make me feel strange is that my entry point was that Dawn was killed by an orca. My entry point was a human death. There's something scary, bizarre and sensational about it that worked on me. So I guess in my mind if that triggered something in me, that if a film had a chance to allow me to pull back the curtain, maybe I could pull back the curtain for the general public."

As for "Finding Dory," all we really currently know about the plot is that it will involve the forgetful Dory searching for her lost family - with Nemo and Marlin in close pursuit. How the new animal-friendly marine park will come into play is anyone's guess. The film is set for release on November 25, 2015.

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Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

'Blackfish' prompts Pixar to change 'Finding Dory' ending
Producers for the upcoming "Finding Nemo" sequel admit that the anti-SeaWorld documentary switched up their original plot line.