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Orcas, also known as killer whales, are apex marine predators and the largest species of the dolphin family. They are highly intelligent and social animals, living in complex matriarchal groups called pods. Orcas are instantly recognizable by their distinctive black-and-white patterned bodies and tall dorsal fins. As mammals, orcas share many characteristics with other marine mammals, including a streamlined body for fast swimming, a thick layer of blubber for insulation and energy storage, and breathing through lungs and exhaling through a blowhole on top of their heads. As marine mammals, they are adapted to life in the ocean and have several unique features that allow them to thrive in this environment. Orcas fit into the hierarchy as a species related to narwhals under the broader categories of marine mammal species, marine mammals, mammals, and animals. While narwhals are known for their long, spiraled tusks, orcas do not have tusks but instead use their large, conical teeth for hunting and capturing prey. Orcas are found in all oceans of the world, including the Arctic and Antarctic regions, while narwhals are primarily found in the Arctic. Orcas display a wide range of behaviors and hunting strategies, depending on their location, diet, and social structure. They feed on a variety of prey, including fish, seals, dolphins, and even large whales. Orcas have been observed working together in teams to herd and capture prey, demonstrating their impressive intelligence and cooperative abilities. In summary, orcas are highly intelligent and social marine mammals that are adapted to life in the ocean. They are the largest species of dolphin and are apex predators, known for their distinctive black-and-white patterned bodies and tall dorsal fins. Orcas fit into the hierarchy as a species related to narwhals under the broader categories of marine mammal species, marine mammals, mammals, and animals. They display a wide range of behaviors and hunting strategies and are found in all oceans of the world.