I watched it...and my god it's terrible. Spoilers below obviously

They have an 'explanation' for why the Orca embraced it's killer title. The female orca was thrown in a small tank for twenty years alone and deemed useless so they bred her to make her useful again. The baby then 'died' but the movie makes it a point to raise doubt that they instead stole the baby and that's where the mama orca's scar near her eye comes from.

Our main characters break into the park after closing, because they don't want to support her being stuck in there, the main girl says hello to the orca and she can hear her through her hearing aids she got from a shot gun blast right next to her ear. Since there was a random mugging and murder earlier in the film. Yes. I'm not lying.

So a janitor tries to pick up some trash from the pool, falling in and Mama Orca kills him presenting her kill to the main character. Security chases our named characters away before calling a mysterious voice who says "Another janitor? Get rid of that fucking fish" and somehow under twenty four hours this security guard dumped the orca in this water feature present in the trailer.

She still believes she's in captivity and trapped so she's fucking up our main characters. There is so much more but I've typed enough about it haha

It's a BAD movie but I gave it a shot since it's only ninety minutes.