Is Orcas Intelligent?

Orcas are highly intelligent; they often live in groups called pods. Each pod is made up of several females and their offspring the members of the pod communicate through underwater calls. A pod may work together to hunt. Despite their name, killer whales are actually dolphins; they are the largest kind of dolphin. They have not been known to attack people in the wild. Orcas are up to 30 feet long, they weigh up to 10 tons, they have shiny black backs, and they are white underneath. Orcas feed on a wide variety of animals. They hunt salmon and other fish, seals, dolphins, and whales. Orcas are large ocean animals; they live in all the oceans, especially in cold waters Orcas live in the ocean, and they are large, fast hunters. They are mammals, animals that feed their young on mother's milk. “Years ago, sailors saw orcas kill whales. They called them ‘whale killers.’ Over time, people started calling them ‘killer whales.’” (Info Bits, Gale)
Orcas are mostly black. They have white patches on their belly and near their eyes they have a big fin in the middle of their back, and their body is long and round.
Orcas have a layer of fat called blubber just beneath their skin. Male orcas are very large. They are about 20 feet long weighing 4 to 6 tons; almost as much as two elephants. Female orcas are a little smaller. They are about 17 feet long and they weigh about 2 to 4 tons. Orcas live in all oceans, but many live in the Arctic and Antarctic regions. These are very cold places. Orcas live in small family groups called pods. A pod has from five to 30 whales, it is thought that each pod has its own language. An orca lives in the same pod its whole