Transient Killer Whales
Transient Killer Whales are a little different from the Southern Residents. Physically, they almost look the same, are similar in size and colour markings, and have echolocation, amongst other similarities. However, what makes them different from the Southern Residents includes their diet, social structure and behaviour, just to name a few.
Diet & Feeding
Transient killer whales are mammal eating Orca. These are the Orca that you see on TV, flinging seals around and chasing after other whales, in particularly gray whale calfs. This is most likely where the name "killer whales" came from when fishermen watched these Orca hunting other whales. Transients use their biological sonar, echolocation, to find prey and then basically beat it up, smacking it with their head and continuing to do so until it dies. To physically see a hunt can be a little disturbing to many people.
When they are hunting smaller prey, such as seals and small sea lions, they can do so on their own. However, when they are hunting larger prey, like larger baleen whales, they will team up with other killer whales and work as a team. After the kill, they share the reward/food, then go on their own way.
To give you an idea of how much a Transient will eat, an adult male needs to eat about three harbour seals a day, which will provide him with enough energy to get by!