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Narwhals(:

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by

Yomna Hassan

on 6 May 2013

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Transcript of Narwhals(:

(Narwhal) Range and Ecosystem They are commonly found in Artic waters bordering Russia,
some waters around north America and waters around Greenland. Diet fish

shrimp

squid Reproduction Gestation period: 14-16 months Mating season: march-may Size Range Offspring Litter size: 1 calf

give birth every 3 years

calves tend to be brown without spots Body Structure Horn like tooth At birth : (5 ft.)
At maturity( 6 and 9 years) females are about 11.5 ft. in length, and weigh around 2,200 lb.
Males grow to between 4 and 6 m (13 and 20 ft.) and can weigh3,500 lb. RANGE MAP: NARWHAL. N.d. Photograph. http://www.defenders.org/Web. 3 May 2013. </animal-habitat-fact-sheet/narwhal?lightbox=range> File:Narwhal and Beluga.jpg. N.d. Photograph. n.p. Web. 3 May 2013. <http://commons.wikimedia.org/wiki/File:Narwhal_and_Beluga.jpg>. Nicklen, Paul. Closer look at the narwhal tusk. N.d. Photograph. http://science.howstuffworks.com/Web. 3 May 2013. <http://science.howstuffworks.com/zoology/marine-life/narwhal3.htm>. The female narwhal becomes sexually mature and able to breed at 4 to 7 years ; the male at 8 to 9. Mating takes place in the spring, Calves are then borngenerally in July. It is believed that a female narwhal will give birth to a calf only once every 3 years. They will stay with their mother for 20 months following birth. And they live up to 50 years Life cycle Works Cited "Narwhal." http://www.animalfactguide.com/. N.p.. Web. 3 May 2013. <http://www.animalfactguide.com/animal-facts/narwhal/>. "Monodon monoceros Linnaeus, 1756." http://www.cms.int. N.p.. Web. 3 May 2013. <http://www.cms.int/reports/small_cetaceans/data/M_monoceros/m_monoceros.htm>. Narwhals are considered deep-water cetaceans "Narwhal Monodon monoceros." nationalgeographic. N.p.. Web. 3 May 2013. <http://animals.nationalgeographic.com/animals/mammals/narwhal/>. Behavior Narwhals have big brains in relation to their body size. The narwhal displays human like behavior "BASIC FACTS ABOUT NARWHALS." . N.p.. Web. 3 May 2013. <http://www.defenders.org/narwhal/basic-facts>. Most narwhals travel in pods of 10-100 individual "BASIC FACTS ABOUT NARWHALS." Defenders of wildlife. N.p.. Web. 3 May 2013. <http://www.defenders.org/narwhal/basic-facts>. Threats Narwhals are mostly hunted by polar bears, orcas and native Inuit people Horn (Theories) Can detect water pressure, temperature and salinity. Might be a way of establishing dominance It's a way of communicating. The tusk has something to do with mating Nicklen, Paul. N.d. Photograph. n.p. Web. May 2013. <http://science.howstuffworks.com/zoology/marine-life/narwhal3.htm>. Inuit hunters cutting up caught narwhal for food. N.d. Photograph. www.arkive.orgWeb. 3 May 2013. <http://www.arkive.org/narwhal/monodon-monoceros/image-G13857.html>. Nicklen, Paul. The treacherous journeys made by narwhals have been witnessed for the first time. N.d. Photograph. n.p. Web. 3 May 2013. <http://www.telegraph.co.uk/earth/wildlife/4547325/Narwhals-filmed-for-first-time-on-migration.html>. Body Systems Resperation: uses a blow-hole to intake air and to shut out water whilst the animal is diving Excretion: Nitrogenous waste, along with chlorine, is excreted through a system of kidneys as the Narwhal has no pores to excrete waste from. The anus is a mere slit on the rear of the Narwhal, where the waste is excreted. also exhales gaseous nitrogen Transport: Blood circulates through the body. Their arteries in their fins and tail are surrounded by veins. The heart of the Narwhal is 4 chambered, with 2 chambers on each side. "The narwhal!." . N.p.. Web. May 2013. <http://corpsewhale.tumblr.com/>. Nicklen, Paul. N.d. Photograph. n.p. Web. 3 May 2013. <http://animals.nationalgeographic.com/animals/mammals/narwhal/>. Monodon monocerus N.d. Photograph. n.p. Web. 3 May 2013. <http://logowar.net/gifs/9733/line-gif>. N.d. Photograph. tumblr.comWeb. 3 May 2013. <http://www.tumblr.com/tagged/narwhal>. Diet Diet Consists mainly of fish, shrimp and squid N.d. Photograph. n.p. Web. 3 May 2013. <http://faculty.washington.edu/lhauser/Nemo.html>.
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