Their bodies need the buoyancy they have in the water to support their body mass. Out of the water, their bodies are too heavy for their rib cages to support the weight. Their lungs can't expand normally and they can't breath properly.
2006-10-21 21:59:22
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answer #1
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answered by mistryl_jade 3
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Whales and dolphins did not go on either. Although they breath air, they are not land-dwelling. Fish and whales survive under water, although some die during floods when sediment and other debris contaminate the water. We find many marine fossils that were buried during the Flood.
Suggested Readings
Deep-Sea Vents: Living Worlds Without Sun
John F. Waters, Cobblehill Books, 1994.
Our Oceans: Experiments and Activities in Marine Science
Paul Fleisher, Millbrook Press, 1995.
Safari Beneath the Sea: The Wonder World of the North Pacific Coast
Diane Swanson, Sierra Club Books for Children, 1994.
Killer Whale
Caroline Arnold, Morrow Junior Books, 1994.
Orca Song
Michael C. Armour, Soundprints, 1994.
Free Willy! Free Keiko!
Earth Island Institute, Earth Island Journal, Spring 1995.
All About Whales
Deborah Kovacs, Third Story Books, 1994.
Baby Whales Drink Milk
Barbara Juster Esbensen, HarperCollins Childrens Books, 1994.
The Birth of Humpback Whale
Robert Matero, Simon & Schuster, 1996.
Calls of the Wild
Michelle Alten, Animals, November 1994.
Whale Chatter: Making Sense of Marine Mammals’ Clicks and Calls
Tina Adler, Science News, May 25, 1996.
Sharks: Voracious Hunters of the Sea
Isidro Sanchez, Gareth Stevens Publishers, 1996.
Shark Facts
Lynn M. Stone, Rourke Corporation, 1996.
Sharks
Erik D. Stoops, Sterling Publishing Co., 1994.
The Shark Callers
Eric Campbell, Harcourt Brace & Co., 1994.
2006-10-22 05:07:44
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answer #2
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answered by C.J. W 3
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Dolphins may be able to survive for a while if their skin is kept wet. They are still water creatures and cannot move. Nor can they eat.
Since they and whales live in water their anatomy works with the buoyancy of water supporting their bodies. Whales especially will crush without the water buoyancy.
2006-10-22 05:00:02
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answer #3
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answered by jude2918 3
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It's weight. If you weighed several hundred pounds, or, in some cases, tons, you'd need water to support your weight. Without it, your own weight would collapse your lungs and you'd suffocate. Smaller species of whales and dolphins are able to survive for short periods of time out of the water, but when they're moved, it's done as quickly as possible to get them back into the water.
That help?
2006-10-22 05:52:24
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answer #4
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answered by Lizzie 4
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Their bodies have evolved to the point where they need water to survive, keeps them hydrated and in case of whales it supports their massive bodies.
2006-10-22 05:10:26
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answer #5
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answered by Kainoa 5
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They are not adapted to dry habitates, for instance, their skin would dry out, become infected, etc if they lived on land. The water also plays a role in their digestive tracks.
And think...how could a dolphin hunt for food out of the water...it would starve, and how would it protect itself from the sun.
2006-10-22 05:06:37
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answer #6
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answered by Gary 1
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Whales and Dolphins do breath air but they take air from water. Its respiratory organ only takes air from water. Water is the most important thing for it.
2006-10-22 05:00:08
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answer #7
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answered by Anonymous
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their bodies are adapted to water life . their skin must be wet with water and their body weight may destroy their interior organs.
2006-10-22 05:03:39
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answer #8
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answered by AHMAD Q 1
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Theur external bodies need constant hydration.
2006-10-22 04:56:35
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answer #9
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answered by Flyer 2
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They are considered as mammals...that's why they need air to survive..but naturally they have to stay in the water.....
2006-10-22 04:57:31
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answer #10
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answered by xrae12 3
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