what does it feed on?
Fish, cephalopods, mammals, seabirds, and sea turtles
Killer whale
Killer whales hunt varied prey including fish, cephalopods, mammals, seabirds, and sea turtles. 
where does the name killer whale come from UNANSWERABLE how long can these whales live? Wild females average 50 to 80 years and wild males  around 29 years on average, with a maximum of about 60 years does it have other names? Yes, "orca" how intelligent are they? Measuring "intelligence" is difficult in them because environment and behavioural strategies are very different from those of humans do they have any specific calling sound? They produce three categories of sounds: clicks, whistles, and pulsed calls is it an endangered species? Yes how is the culture of the indigenous related to them? The indigenous peoples of the Pacific Northwest Coast feature killer whales throughout their art, history, spirituality and religion which nations fall under the region of the above mentioned coast? British Columbia, Washington state, parts of Alaska, Oregon, and Northern California does the indigenous people of the coast have any certain music? Yes, the music varies in function and expression. what can you tell about their genetics? Haplogroup Q1a3a is a Y chromosome haplogroup generally associated with them what are some of the threats faced by the species mentioned earlier? Depletion of prey species, pollution, large-scale oil spills, and habitat disturbance caused by noise and conflicts with boats what kind of relation it has with humans? They have helped humans hunting other whales why do humans hold them captive? Its intelligence, trainability, striking appearance, playfulness in captivity and sheer size have made it a popular exhibit at aquaria and aquatic theme parks
wiki:7761167
Killer whale [SEP] Feeding
Killer whales are apex predators, meaning that they themselves have no natural predators. They are sometimes called the wolves of the sea, because they hunt in groups like wolf packs. Killer whales hunt varied prey including fish, cephalopods, mammals, seabirds, and sea turtles. Different populations or ecotypes may specialize, and some can have a dramatic impact on prey species. However, whales in tropical areas appear to have more generalized diets due to lower food productivity. Killer whales spend most of their time at shallow depths, but occasionally dive several hundred metres depending on their prey.