UPSC CSAT : Narwhals

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Saturday, 12 April 2025

Narwhals

Narwhals

For the first time, scientists have observed narwhals (commonly known as "sea unicorns") using their tusks for hunting, providing valuable insights into their behavior and adaptations in the warming Arctic.

About Narwhals (Monodon monoceros):
Narwhals are medium-sized toothed whales that inhabit deep Arctic waters.

  • Physical Characteristics: Males have a long, spiral tusk (up to 3 meters), which is an elongated upper left tooth. Unlike other toothed whales, narwhals lack teeth in their mouths. Some individuals may have one or two tusks, while others have none.
  • Tusks Function: Narwhals use their tusks to stun prey, particularly Arctic char, and for competition during mating.
  • IUCN Status: Least Concern.
  • Social Behavior: Narwhals are highly social and typically found in pods of 2 to 25 individuals.
  • Migration: Unlike some other whale species, narwhals do not undertake long migrations.
  • Diet: Their diet consists of Greenland halibut, Arctic and polar cod, squid, and shrimp.

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