Dolphins Under the Sea   By: Nita Amalia

XII IPA 2SMAN 2 MATARAM

Hi, welcome to our Dolphin Presentation.

We chose the dolphins because they are so friendly

with people.  Another reason why we chose

the dolphin is because they are a mammals like we are.

Why Did We Pick This Animal?

Description

DESCRIPTION• Dolphins have gray skin, they can also have different

color skin. There is a pink dolphin in the Amazon.• 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.

• They are a warm-blooded vertebrate animal.

Adaptations

       

•Dolphin’s have smooth skin.Dolphin’s have smooth skin.•They have slippery bodies that help They have slippery bodies that help them glide through the water. them glide through the water. •Blubber (fat) helps the dolphin stay Blubber (fat) helps the dolphin stay warm in cold water. warm in cold water.

Habitat

General Habitat     

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. 

Temperatures

• Dolphins are sensitive to water temperature changes• The largest bottlenose dolphins live in the coldest

waters. The smallest live in the warmest waters. • Ocean temperatures can also affect the kinds of

foods that live in an area, which in turn affects dolphin behavior.

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.

Plant Life•There are

different water plants that are in a dolphin's enviroment.

•There is seaweed and plankton

•Dophins eats fish who live on this plant  life.                                                                          

Animal Life

• There are different animals that live in a Dolphins enviorment.

• There are little fish that Dolphins like to eat like shrimp or mullet 

• The big animals that also share the same habitat are sharks and sea turtles.

Sensory Organs

Sight

• Dolphins have very good vision both above and below the water.

• They are able to see in both environments, because they can control the way light enters their eye. 

• One way they use their sight to escape predators 

Smell• It is believed that they have no

sense of smell• They rely on their other senses to

help them in the wild• Tasting the water can be their way

of "smelling" it.

Hearing

• Dolphins hear about 7 times better than humans do.

• They can hear vibrations in the water

• It is believed that their teeth are arranged in a way that works as an antenna to receive the incoming sound

 

Taste

• Little is known about a dolphin's sense of taste• They do have taste buds • They show strong preferences for certain types

of fishes.

Touch• The dolphin's sense of touch is

also well-developed• A bottlenose dolphin's skin is

sensitive• It will shy away if a human

attempts to touch it. 

Food and Life Cycles

Life Cycle

•After eleven or twelve months, depending on the species, a After eleven or twelve months, depending on the species, a pregnant dolphin gives birth. pregnant dolphin gives birth.

•Dolphins, like almost all mammals, give birth to live young, Dolphins, like almost all mammals, give birth to live young, and nurse them and nurse them

•A calf stops nursing at 18 months. At 3-4 months old the 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 calf gets teeth and begins to eat fish. When calves are only a few days old they can vocalize (make sounds). few days old they can vocalize (make sounds).

•A dolphin’s average life span is probably 20 years or less; A dolphin’s average life span is probably 20 years or less; even though, dolphins have lived as long as 48 years. even though, dolphins have lived as long as 48 years.

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.

Interesting Facts

Interesting Fact #1

These warm-blooded mammals belong to a group which also encompass all whales.

Interesting Fact #2

Dolphins have been clocked at speeds of 26.3 km/hr, which they

maintained for about 1500 meters, leaping constantly.

Interesting Fact #3

  A dolphins’ long nose helps them kill sharks.

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.

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#hearinghttp://www.dolphinsplus.com/dolphin-information.htmhttp://www.dolphins-world.com/Dolphin_Reproduction.htmlhttp://library.thinkquest.org/3935/DOLPHINS.HTM

The End

 Bye - Bye

Hope you enjoyed the

show!