Killer whales, also known as orcas, are the largest members of the dolphin family and belong to the class Mammalia. Renowned for their striking black-and-white coloration and sophisticated hunting techniques, these apex predators inhabit oceans around the world, from the Arctic and Antarctic to tropical seas. Killer whales live in complex social structures known as pods, which are often matriarchal and display unique vocalizations and hunting strategies passed down through generations. They have a diverse diet that includes fish, seals, and even whales, showcasing their adaptability and intelligence. As keystone species, killer whales play a crucial role in maintaining the balance of marine ecosystems. However, they face threats from pollution, depletion of prey, and disturbances from vessel traffic, necessitating ongoing conservation efforts to protect these majestic and ecologically significant marine mammals.