- 1.Dolphins Under theSea By: Nita Amalia XII IPA 2 SMAN 2
MATARAM Hi, welcome to our Dolphin Presentation.
2.
- We chose the dolphins because they areso friendly
withpeople.
- Another reason why we chose the dolphin is becausethey are a
mammals like we are.
Why Did We Pick This Animal? 3. Description 4. DESCRIPTION
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- Dolphins have gray skin, they can also have different color
skin. There is a pink dolphin in the Amazon.
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- The body is sleek and smooth; the hairless skin is rubbery to
the touch. Most species have jaws that protrude into a beak like
snout.
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- They are a warm-blooded vertebrateanimal.
5. Adaptations
- Dolphins have smooth skin.
- They have slippery bodies that help them glide through the
water.
- Blubber (fat) helps the dolphin stay warm in cold water.
6. Habitat 7.
This animal lives in warm salty waters. They are able to live in
a wide variety of marine habitats, from deep oceans to shallow
shorelines. Coastal living dolphins can be found in harbors,
bays,lagoons, and river mouths that open into the oceans. Offshore
living bottlenose dolphins do equally well in the deep, cold oceans
far from shore. 8. Temperatures
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- Dolphins are sensitive to water temperature changes
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- The largest bottlenose dolphins live in the coldest waters. The
smallest live in the warmest waters.
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- Ocean temperatures can also affect the kinds of foods that live
in an area, which in turn affects dolphin behavior.
9. Water
- Since dolphins live in the water it is very important to
them.
- Dolphins breath air even though they are water animals and they
can drown in fishing nets.
- Dolphins are very sensitive to changes in their habitat from
trash being dumped to global warming.
10. Plant Life
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- There are different waterplants that are in a dolphin's
enviroment.
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- Thereis seaweedandplankton
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- Dophins eats fish who live on this plantlife.
11. Animal Life
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- There are different animals that live in a Dolphins
enviorment.
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- There are little fish that Dolphins like to eat like shrimp
ormullet
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- The big animals that also share the same habitat are sharks and
sea turtles.
12. Sensory Organs 13. Sight
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- Dolphins have very good vision both above and below the
water.
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- They are able to see in both environments, because they can
control the way light enters their eye.
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- One way they use their sight to escape predators
14. Smell
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- It is believed that they have no sense of smell
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- They rely on their other senses to help them in the wild
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- Tasting the water can be their way of "smelling" it.
15. Hearing
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- Dolphins hear about 7 times better thanhumans do.
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- They can hear vibrations in the water
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- It is believed that their teeth are arranged in a way that
works as an antenna to receive the incoming sound
16. Taste
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- Little is known about a dolphin's sense of taste
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- Theyshow strong preferences for certain types offishes.
17.
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- The dolphin's sense of touch is also well-developed
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- A bottlenose dolphin's skinis sensitive
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- It will shy away ifa human attempts to touch it.
18. Food and Life Cycles 19. Life Cycle
- After eleven or twelve months, depending on the species, a
pregnant dolphin gives birth.
- Dolphins, like almost all mammals, give birth to live young,
and nurse them
- A calf stops nursing at 18 months. At 3-4 months old the calf
gets teeth and begins to eat fish. When calves are only a few days
old they can vocalize (make sounds).
- A dolphins average life span is probably 20 years or less; even
though, dolphins have lived as long as 48 years.
20. Food Chain
- The sun warms the plants, which the small sea animals eat, and
the dolphin eats the small sea animals, and the shark eats the
dolphins.
21. Interesting Facts 22. Interesting Fact #1
- These warm-blooded mammals belong to a group which also
encompass all whales.
23. Interesting Fact #2
- Dolphins have been clocked at speeds of 26.3 km/hr, which they
maintained for about 1500 meters, leaping constantly.
24. Interesting Fact #3
A dolphins long nose helps them kill sharks. 25. Interesting
Fact #4
- They breathe through a special opening on their heads called a
"blowhole". When dolphins are relaxed or underwater, their
blowholes are closed.
26. Resources
http://library.thinkquest.org/CR0215242/dolphins.htm
http://thedolphinplace.com/facts.html
http://en.wikipedia.org/wiki/Dolphin
http://www.dolphinsplus.com/dolphin-information.htm#hearing
http://www.dolphinsplus.com/dolphin-information.htm
http://www.dolphins-world.com/Dolphin_Reproduction.html
http://library.thinkquest.org/3935/DOLPHINS.HTM 27. The End Bye -
Bye Hope you enjoyed the show!