Overview
Whales, dolphins, otters, walruses, and orcas are just like us, they’re mammals. Well, they’re not just like us. They live in the ocean. They breathe air, have hair, nurse their babies, and they are warm-blooded. They keep the same body temperature all day. To do that in the ocean isn’t easy. Water soaks up heat, so the ocean is really pretty cold. Marine mammals have all sorts of ways to keep warm. Whales, dolphins, and walruses have thick layers of fat called “blubber.” It’s great insulation. It holds their body heat keeping them warm in the cold ocean. Sea otters have thick layers of fur that cover their whole bodies. Otters fluff their fur to trap air between the hairs. It helps them float, it the air keeps them warm even when they dive deep hunting for food. These adaptations make it possible for marine mammals to live all over the world’s oceans.
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4 - 1Rivers & Streams November 03, 1995 -
4 - 2Nutrition November 10, 1995 -
4 - 3Marine Mammals November 17, 1995 -
4 - 4Earthquakes November 24, 1995 -
4 - 5NTV Top 11 Video Countdown December 01, 1995 -
4 - 6Spiders January 05, 1996 -
4 - 7Pollution Solutions January 12, 1996 -
4 - 8Probability January 19, 1996 -
4 - 9Pseudoscience January 26, 1996 -
4 - 10Flowers January 27, 1996 -
4 - 11Archaeology January 28, 1996 -
4 - 12Deserts January 29, 1996 -
4 - 13Amphibians January 30, 1996 -
4 - 14Volcanoes January 31, 1996 -
4 - 15Invertebrates February 07, 1996 -
4 - 16Heart February 14, 1996 -
4 - 17Inventions February 21, 1996 -
4 - 18Computers April 25, 1996 -
4 - 19Fossils September 05, 1997 -
4 - 20Time September 12, 1997