They're hunting these whale looking things and when they kill them, they drill a hole up into their adrenal gland and fill up this giant vial with that they call liquid gold, which has anti-aging properties and "way way way more than you can get from a human being." (So....they usually get it from human beings?)
It's so valuable they don't even bother with the rest of the whale's body. They just take the adrenochrome and bounce.
No I missed that part but my Aspergers kid mentioned that to me later. I was having hard time staying awake. I did notice the line “dark to light” twice and could’ve sworn it was said that there is a whole world under the sea.