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Narwhal diet varies between seasons. In winter, narwhals feed on demersal prey, mostly flatfish, under dense pack ice. During the summer, they eat mostly Arctic cod and Greenland halibut, with other fish such as polar cod making up the remainder of their diet. [57] Narwhals consume more food in the winter months than they do in summer. [46] [49]
Monodontids have a wide-ranging carnivorous diet, feeding on fish, molluscs, and small crustaceans. They have reduced teeth, with the beluga having numerous simple teeth, and the narwhal having only two teeth, one of which forms the tusks in males. Gestation lasts 14–15 months in both species, and almost always results in a single calf.
Muktuk has been found to be a good source of vitamin C, the epidermis containing up to 38 mg (0.59 gr) per 100 grams (3.5 oz). [12] [13] It was used as an antiscorbutic by British Arctic explorers. [14]
Inuit choose their diet based on four concepts, according to Borré: "the relationship between animals and humans, the relationship between the body and soul and life and health, the relationship between seal blood and Inuit blood, and diet choice." Inuit are especially spiritual when it comes to the customs of hunting, cooking, and eating.
Narwhals and beluga whales are both pelagic feeders, with the largest portion of their diet consisting of Arctic cod. [6] Through analysis of stable isotopes, Skovrind et al. determined that the hybrid had isotopic carbon readings consistent with that of a benthic foraging strategy. [1]
The narwhal, with its blunt snout and reduced dentition, relies on suction feeding. [66] Sperm whales usually dive between 300 and 800 metres (980 and 2,620 ft), and sometimes 1 to 2 kilometres (3,300 to 6,600 ft), in search of food. [60]: 79 Such dives can last more than an hour.
Topped with vinegar-miso sauce Whale bacon Whale bacon on pizza Icelandic fin whale meat on sale in Japan in 2010 A beluga whale is flensed in Buckland, Alaska in 2007, valued for its muktuk which is an important source of vitamin C in the diet of some Inuit.
The skin and blubber taken from the bowfin, beluga, or narwhal is also valued, and is eaten raw or cooked. In recent years Japan resumed hunting for whales, which they call "research whaling". Japanese research vessels refer to the harvested whale meat as incidental byproducts resulting from lethal study.