Monster Hammerheads: Killer Instinct (2023)

Dr. Tristan Guttridge investigates a bold theory about hammerhead sharks: that some may grow to monster sizes by preying on other sharks. To find evidence, he sets out to obtain tissue samples from some of the largest sharks on the planet, looking for signs that could prove hammerheads are not just hunters, but shark-eating predators capable of reaching extraordinary size.