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
Killer whale
The indigenous peoples of the Pacific Northwest Coast feature killer whales throughout their art, history, spirituality and religion. 
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
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Killer whale [SEP] Indigenous cultures
The indigenous peoples of the Pacific Northwest Coast feature killer whales throughout their art, history, spirituality and religion. The Haida regarded killer whales as the most powerful animals in the ocean, and their mythology tells of killer whales living in houses and towns under the sea. According to these myths, they took on human form when submerged, and humans who drowned went to live with them. For the Kwakwaka'wakw, the killer whale was regarded as the ruler of the undersea world, with sea lions for slaves and dolphins for warriors. In Nuu-chah-nulth and Kwakwaka'wakw mythology, killer whales may embody the souls of deceased chiefs.