ALL ABOUT WHALES!
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Zoom Whales ALL ABOUT WHALES! |
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| What is a Whale? | Whale Information Sheets | Simple Whale Print-outs | Extreme Whales | Whale Myths | Whale Evolution |
| NARWHAL Monodon monoceros |
Narwhal Printout Narwhal Connect-the-Dots |
SIZE
SKIN AND SHAPE
HABITAT
The Narwhal (meaning "corpse whale" in Old Norse) is a rarely seen Arctic whale. This social whale is known for the VERY long tooth that males have. Very little is known about this whale.
THE TOOTH
All narwhals have two teeth in their upper jaw. After the first year of a male narwhal's life, its left tooth grows outward, spirally. This long, single tooth projects from its upper jaw and can grow to be 7-10 feet (2-3 m) long. Tusks are usually twisted in a counterclockwise direction and have a hollow interior. The tusk's function is uncertain, perhaps used as a formidable jousting weapon in courtship and dominance rivalry, in obtaining food, and/or for channeling and amplifying sonar pulses (which they emit). The tusk is not used in hunting. Long ago, narwhal sightings reinforced (or started) the unicorn legends.
Narwhals can grow to be about 16 feet (4.9 m) long (not counting the tooth), and weigh about 1.8 tons (1.6 tonnes). Females are slightly smaller, averaging about 13 feet (4 m) long, and weighing 1 ton (0.9 tonnes). At birth, narwhals are about 5 feet (1.5 m) long and 175 pounds (80 kg).
Narwhal means "corpse whale" in Old Norse; this is perhaps a description of their skin, which is bluish-gray with white blotches (young narwhals are brown). Narwhals have a cylindrical body (with no dorsal fin) and a round head with a small mouth on their blunt snout. This compact body shape plus a thick layer of blubber retains heat in the icy Arctic waters in which they live.
Narwhals live in the icy waters of the Arctic seas. They rarely stray far from ice. In summer they infrequently enter estuaries, deep fjords, and bays.
VOCALIZATION
Narwhals are a very vocal species of whale, making clicks, squeals, and whistles to communicate and/or navigate.
LIFE SPAN
Narwhals maximum life span is about 50 years.
DIET
Narwhals eat fish 
, squid 
, shrimp, and other marine animals.
SOCIAL GROUPS
Pods (social groups of whales) of 4-20 narwhals have been observed; some groups consist of just one sex and others contain both sexes. Many pods may travel together, forming very large groups.
POPULATION COUNT
It is estimated that there are roughly 10,000 to 45,000 narwhals. Narwhals are preyed upon by man (Inuit hunters legally hunt narwhals), polar bears, orcas, sharks, and walruses.
REPRODUCTION
The Narwhal's gestation period is 10-16 months. Calves are brown and have no spots (unlike adults who are blue-gray with whitish spots). Calves are nursed for about 4 months after birth.
CLASSIFICATION
Narwhals (Monodon monoceros) are toothed whales (Suborder Odontoceti). They are one of 76 cetacean species, and are marine mammals.
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Kingdom Animalia (animals) Phylum Chordata (vertebrates) Class Mammalia (mammals) Order Cetacea (whales and dolphins) Suborder Odontoceti (toothed whales) Superfamily Delphinoidea (oceanic dolphins and some whales) Family Monodontidae (Narwhals and Beluga whales) Genus Monodon Species monoceros |
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NARWHAL ACTIVITIES
Narwhal Connect-the-Dots
A first grade addition activity. Solve the 1-digit addition problems, then do letter substitutions to find the name of a whale.
A first grade subtraction activity. Solve the 1-digit subtraction problems, then do letter substitutions to answer a whale question.
A Narwhal word hunt activity - For second and third graders.
NARWHAL LINKS
The Narwhal from the Whales in Danger Information Service
The Twists in the Narwhal's Horn by Carla Helfferich
Old Narwhal tooth in England
(and other cetaceans) |
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BELUGA WHALE
BLUE WHALE BOTTLENOSE DOLPHIN BOWHEAD WHALE GRAY WHALE HUMPBACK WHALE |
KILLER WHALE
MINKE WHALE NARWHAL ORCA RIGHT WHALES SPERM WHALE |
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