Why does eating the liver make them particularly metal? I’ve always assumed predators in the wild eat most/all parts of their prey. (Vegetarian here if that explains my ignorance :))
Not until you kill it and fluids start moving around. (There are a few things you can do to keep the meat from degrading, like immediately draining the blood and the bladder.)
The liver is the target because it's the most calorie dense meat in the shark, if not the entire ocean. At least out of what orcas eat. Plus it's probably delicious.
It’s metal, because usually the predator’s livers can be really toxic. Humans only eat the liver of vegetarian animals, and eating the liver of a carnivore animal could result in death.