Narwhal (Monodon monoceros): The narwhal, despite being a whale, is one of the quietest marine mammals, producing no loud calls like its relatives. It emits soft clicks, whistles, and knocks primarily for echolocation in the Arctic’s dark waters. Unlike noisy dolphins or sperm whales, narwhals avoid loud vocalizations, possibly to evade predators like orcas. Their tusk, a sensory organ, may help detect environmental changes without sound. They travel in small, tight-knit groups with minimal acoustic signaling. This quiet behavior is crucial in an environment where sound travels far and can attract danger. The narwhal’s silence reflects a cautious, energy-efficient lifestyle in one of Earth’s most extreme and acoustically sensitive habitats.
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