People don't think. "Orcas are whales thats why they are called that!" WRONG. Orcas are not whales. They are infact a dolphin.
They are the largest of the dolphins species. Most people mistake them for whales because of there name and there size but they are plus like a dauphin than a whale.

WHALES: Large creatures that usaully feed on krill (Baleens Only) They can swim to impressive depths and make beatiful and soft but loud sounds to communicate with the rest of the pod. Some whales feed on squid (toothed whaled only) such as the famous Sperm whale.
DOLPHINS: Friendly creatured that have...