where does the name killer whale come from
Killer whale According to some authors, the name killer whale is a mistranslation of the 18th century Spanish name asesina-ballenas which means literally whale killer.[16] Basque whalers would have given it such name after observing pods of orcas hunting baleen whales.
Sperm whale The sperm whale is a pelagic mammal with a worldwide range, and will migrate seasonally for feeding and breeding.[4] Females and young males live together in groups, while mature males (bulls) live solitary lives outside of the mating season. The females cooperate to protect and nurse their young. Females give birth every four to twenty years, and care for the calves for more than a decade. A mature sperm whale has few natural predators, although calves and weakened adults are sometimes killed by pods of orcas (killer whales).