Athropolis HOME   |   Maps   |   Arctic Links   |   Arctic Library
Click to go HOME
From our library of things you should know about the Arctic

Click for more information and credits.

Deep Sea Divers

The food that walruses like to eat is usually in waters no more than about 80 meters / 263 feet deep, and a walrus usually doesn't dive deeper than this - making short dives of 5 to 8 minutes.

However, they can go deeper and stay down longer. One observation confirmed a dive of 113 meters / 371 feet - staying underwater for about 25 minutes!

Walruses, like other marine mammals, have special adaptations to help conserve oxygen when diving. They slow their heartbeat, and during deep dives, their blood is pulled away from parts of the body that do not need high oxygen levels. It's re-directed to more important organs, such as the heart and brain.

Their warm blood also shifts away from the skin surface to inside the body. This helps to keep their body temperature stable at about 99F / 37C. When the walrus moves ashore, blood flows back to the skin.

The rounded walrus shape comes from a layer of blubber, or fat, that can be nearly 6 inches / 15 cm thick and it provides a layer of insulation under the 1 inch / 2.5 cm thick hide. This huge bulk keeps them warm in Arctic waters by blocking out the cold.

Although the walrus' great bulk makes them awkward on land, when they hit the water - watch out! Walruses are very strong, and with their short strong foreflippers and triangular-shaped hind flippers, they can really move!

MORE...
Click pictures for more information and credits.
Library: Arctic Animals, Arctic
Links: Animals, Arctic
Walruses and Their Young
Walruses are Social Animals
Arctic Maps & Weather Reports


Double-click any unlinked word DICTIONARY: Just "double-click" any unlinked word on this page for the definition from Merriam-Webster's Student Electronic Dictionary at Word Central.
Arctic Library ARCTIC LIBRARY & GLOSSARY: Check this section for an index of the rest of the things you really need to know about the Arctic.
All sorts of Arctic Maps ARCTIC MAPS & WEATHER REPORTS: Maps of the Northwest Passage, explorers' routes, iceberg sources, Nunavut, the Arctic by treeline, temperature...
Links to related sites. ARCTIC LINKS: Even more information! Links to sites related to the Arctic and "Iceberg: the Story of the Throps and the Squallhoots".
A Guide to Arctic Sunrise and Sunset GUIDE TO ARCTIC SUNRISE & SUNSET: How much sunlight or darkness is there in the Arctic on each day of the year?

Search for more on this topic...from Athropolis!
(1) Click the button for Web (below) to search the World Wide Web
(2) Click button for
WWW.ATHROPOLIS.COM to search this web site

 
Web WWW.ATHROPOLIS.COM
Icy Cold Jokes | Icy Games | E-mail | Athropolis HOME
Copyright 2005 Athropolis Productions Limited. The content of web sites that this site has links
to is the property of their respective owners, and Athropolis is not responsible for their content.