Orca

An orca or killer whale is a type of entity on Earth. They are notable for being one of the most intelligent cetaceans and could qualify as a lower type-0 civilization on the Kardashev Scale. Some local populations are considered threatened due to use for poaching and parks by the humans just above them and Chimpanzee in the hierarchy, so Orca's status is marked as unknown by the International Union for Conservation of Nature. Orcas are highly social: some populations are composed of matrilineal pods. Orcas rarely attack humans, but there have been some cases of captive orcas killing them. Their reputation in different entity groups ranges from being the souls of people to a predator to merciless killers. They are actually dolphins, despite their title as a “killer whale”.

Diet
Killer whales are apex predators, so they do not have any natural predators aside from Human. They prey other aquatic entities, including cephalopods, seals, fish, and sea turtles. However, orcas in the tropics have more general diets.