Feeding
Given the fact that the Killer Whale is so large, it stands to reason that they need substantial food resources. They can take on many marine mammals that are large in size. This includes sea lions, seals, and even other whales or small dolphins. They have teeth that can be up to 4 inches in length. They will also eat small prey such as bids, squid, and fish.
Examining the stomach contents, some interesting food sources have been identified. They include sea otters, turtles, penguins and a variety of other animals. They can consume up to 99 pounds of food per day, so they spend time hunting and eating what they can get access to. They are able to swallow the small prey whole. With the larger prey, they use their teeth to tear of chunks that they swallow.
Killer Whales hunt in groups, and it is usually a smaller segment of the pod that works as a team to get food for those individuals. As a team, they are often able to circle around prey and then attack it. A common technique is to stun the fish in a school by hitting them with the flukes.
(source:google/http://www.dolphins-world.com/)
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