He’s not expressing confusion, he’s tilting his head for better sound localization. While having an ear on each side of the head is good for lateral echolocation, tilting the head so that the ears are offset gives it vertical depth.
Kind of like lava lamps but better! These jellyfish are real. They have died of natural causes, been harvested by these lamp makers, frozen in liquid nitrogen and encased in crystalline epoxy. They glow in the dark, due to the jellyfishes’ natural bioluminescence.