| 11. | Like the beluga, narwhals are medium-sized whales.
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| 12. | The narwhal is most closely related to the beluga whale.
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| 13. | Narwhals have only occasionally been observed using the tusk for aggressive behavior.
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| 14. | Seal and narwhal hunting are quite common to supplement food and clothing.
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| 15. | Other whales and dolphins on display included belugas, narwhals and dolphins.
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| 16. | Later, they have to decide whether to help a stranded narwhal.
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| 17. | The Narwhal is also commonly known as the moon whale.
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| 18. | Rarely, a female narwhal may also produce a tusk.
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| 19. | But despite the machinations of Olrik, Operation Narwhal is a success.
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| 20. | Even the long tusk of the narwhal is a vice-formed tooth.
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