Agriculture
Getting the dirt on carbon
Making the most of a meal
Seeds of the Future
Amphibians
Salamanders
Newts
Bullfrogs
Animals
Copybees
Eyes on the Depths
The Secret Lives of Grizzlies
Behavior
The Snappy Lingo of Instant Messages
Pain Expectations
Why Cats Nap and Whales Snooze
Birds
Peafowl
Waterfowl
Nightingales
Chemistry and Materials
Scientist Profile: Wally Gilbert
The Incredible Shrunken Kids
Unscrambling a Gem of a Mystery
Computers
Music of the Future
A Light Delay
The Shape of the Internet
Dinosaurs and Fossils
Mammals in the Shadow of Dinosaurs
Dino Bite Leaves a Tooth
Some Dinos Dined on Grass
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Earth
Rodent Rubbish as an Ice-Age Thermometer
The Pacific Ocean's Bald Spot
Salty, Old and, Perhaps, a Sign of Early Life
Environment
Pollution Detective
A Change in Leaf Color
Lessons from a Lonely Tortoise
Finding the Past
Childhood's Long History
Decoding a Beverage Jar
Digging Up Stone Age Art
Fish
Tilapia
Piranha
Codfish
Food and Nutrition
A Pepper Part that Burns Fat
Chew for Health
The mercury in that tuna
GSAT English Rules
Who vs. That vs. Which
Pronouns
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
Mastering The GSAT Exam
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
Access denied - Disabled boy aces GSAT
42,000 students will sit for the GSAT Exam in two weeks
GSAT Mathematics
42,000 students will sit for the GSAT Exam in two weeks
Math is a real brain bender
Math Naturals
Human Body
Taste Messenger
Hear, Hear
Music in the Brain
Invertebrates
Horseshoe Crabs
Camel Spiders
Sea Anemones
Mammals
Otters
Kodiak Bear
Cocker Spaniels
Parents
What Not to Say to Emerging Readers
How children learn
Choosing a Preschool: What to Consider
Physics
Echoes of a Stretched Egg
Road Bumps
Project Music
Plants
Bright Blooms That Glow
Making the most of a meal
Plants Travel Wind Highways
Reptiles
Pythons
Crocodiles
Komodo Dragons
Space and Astronomy
Chaos Among the Planets
Wrong-way planets do gymnastics
Intruder Alert: Sweeping Space for Dust
Technology and Engineering
Searching for Alien Life
Machine Copy
Beyond Bar Codes
The Parts of Speech
What is a Verb?
What is a Noun
What is a Preposition?
Transportation
Robots on a Rocky Road
Tinkering With the Basic Bike
Are Propellers Fin-ished?
Weather
A Change in Climate
Arctic Melt
Watering the Air
Add your Article

Walrus

Walruses are members of the order Carnivora and suborder (or alternatively superfamily) Pinnipedia. They are the only members in the family Odobenidae. The compound Odobenus comes from odous (Greek for "tooth") and baino (Greek for "walk"), based on observations of walruses using their tusks to pull themselves out of the water. Rosmarus originates in the Swedish word for walrus. Enormous gelatinous masses: Walruses are large semi-aquatic mammals that live in the cold Arctic seas of the Northern Hemisphere. Two subspecies exist: the Atlantic, Odobenus rosmarus rosmarus, and the Pacific, Odobenus rosmarus divergens. The Pacific walrus is slightly larger, the male weighing up to 1800kg (4000lbs), but usually males only top out at 3500 lbs. Walruses should not be confused with elephant seal. Walruses have thick skin and it can get to 5cm (2in) thick around the neck and shoulders of males. Half water, half land: Walruses spend about half their time in the water and half their time beaches or ice floes, where they gather in large herds. They may spend several days at a time either on land or in the sea. Diving to depths of 90 m (300 ft), they sometimes stay under for as long as a half hour. They use their pectoral flippers to move along out of water and can stand on all fours with an awkward gait when on rough surfaces. 30 minute dives: Walruses mate in the water and give birth on land or ice floes. They feed in the water, diving to depths of 300 ft (90 m), sometimes staying under for as long as a half hour. Clams and mollusks form a large part of their diet. Male walruses compete for territory, often fighting each other; the winners in these fights breed with large numbers of females. Older male walruses frequently bear large scars from these bloody but rarely fatal battles. Walruses have been known to kill polar bears. Famous tusks: The walruses use their long tusks (elongated canines) for fighting, dominance, and display and the males will spar with their tusks. They can also use them to form and maintain holes in the ice, or to anchor themselves with the ice. Pack ice birth: Walruses have a breeding season in mid-winter, a time spent in the southern Bering sea. The males show off in the water for the females who view them from pack ice. Males compete with each other aggressively for this display-space. Mating probably takes place in the water. After fertilization the fertilized egg remains dormant for several months, then a gestation period of 11 months follows. When a calf is born it is over 3 ft (1 m) long and able to swim. Birth takes place on the pack ice; the calf nurses for about 2 years, spending 3 to 5 years with its mother. Females mature at about 6 years, males at 9 or 10. A walrus lives about 50 years. 3 Natural Enemies: About 200,000 Pacific walruses exist; Alaska Natives harvest about 3000 annually. The walruses use their long tusks (elongated canines) for fighting and for display. Humans use ivory from the tusks for carving. The natives call the penis bone of male an oosik and use it in making knives. Walruses have only three natural enemies: humans, orca, and the polar bear. Polar bears hunt walruses by rushing at them, trying to get the herd to flee, then picking off calves or other stragglers. Protecing the walrus: Federal laws in both the USA and in Canada protect walruses and set quotas on the yearly harvest. Only under rare circumstances may non-native hunters gain permission to kill a walrus legally. The law prohibits the export of raw tusks from Alaska, but walrus-ivory products may come on the market if first sculpted into scrimshaw by a native craftsman. Commercial auction sites such as eBay make a large selection of "pre-ban" walrus ivory available. About 15,000 Atlantic walruses exist: they live in the Canadian Arctic, in the waters of Greenland, of Svalbard and of the western portion of the Russian Arctic. The Atlantic walrus once enjoyed a range that extended south to Cape Cod and occurred in large numbers in the Gulf of St. Lawrence.

Walrus
Walrus








Designed and Powered by HBJamaica.com™