Killer whales (Orcinus orca), or orcas, are toothed whales belonging to the dolphin family. They are the largest dolphin species, reaching lengths of up to 10 m (33 ft.) and weights of up to 10 tonnes. The black and white colouring, robust body and tall dorsal fin give the whales a somewhat chilling yet majestic and beautiful appearance. They are often called the “wolfs of the sea” due to their often cruel hunting methods. They are most definitely at the top of the food chain. Killer whales hunt in packs and are highly organised. Younger animals in the group are taught specialised hunting tactics by the older animals. During training, the young animals are allowed to practice with the half-unconscious prey, which makes it seem as though the whales are playing with the prey for no reason. The real reason involves training. Killer whales are unbelievably willing to learn, have developed quite complex communication system and also form lifelong, deep ties within the group.
