The conquistadors' prayer before meeting the Golden Woman, though indistinct, is the only line spoken on-screen.
Due to the hyper realistic movements of all the characters, the textures of water, blood, and the behavior of light, and a multitude of other factors, it almost looks like "Jibaro" is partly live-action, or possibly a mix of animation and motion capture, but the animation was actually done the old fashioned way, using keyframe animation and matching other reference materials to bring the animated short to life. Obviously the CGI used to generate liquid effects and other aspects is all done using high-end modern technology, but in an interview with Screen Rant, Alberto Mielgo said he and his crew actually brought in a choreographer to design the siren's dance and used footage of that performance to match the animated character's motions.
The episode won 2 Emmy Awards for Outstanding Individual Achievement in Animation - character design and Outstanding Short Form Animated Program.