3. Pod Communication
Killer whale pods each have a distinctive call for their pod so that they can communicate with one another. Since orcas in captivity do not have a pod, they are unable to communicate with the other captive whales around them.
Because killer whales are, as their moniker implies, apex predators, they generally feed on other sea mammals such as small whales, seals, and even the occasional shark. They feed on live prey, as they are hunters, not scavengers. In SeaWorld parks, orcas are fed frozen-thawed fish and generally eat the same meal every day with little to no variation.
5. Group Movements
As part of the new orca enclosure, SeaWorld San Diego is boasting a "water treadmill" system, which will supposedly allow the whales to swim against a strong current and get exercise. However, orcas in the wild generally swim as much as 100 miles per day. The IUCN Redlist site states that "the killer whale is the most cosmopolitan of all cetaceans and may be the second-most widely-ranging mammal species on the planet, after humans."