Hi, welcome to
our Dolphin
Presentation.
Dolphins
Under the Sea
By: Nita Amalia
XII IPA 2
SMAN 2 MATARAM

Why Did We Pick This Animal?
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.

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.
•They have slippery bodies that help
them glide through the water.
•Blubber (fat) helps the dolphin stay
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 plank
ton
• 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
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 dolphin’s average life span is probably 20 years or less;
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#hearing
http://www.dolphinsplus.com/dolphin-information.htm
http://www.dolphins-world.com/Dolphin_Reproduction.html
http://library.thinkquest.org/3935/DOLPHINS.HTM

Hope you enjoyed
the show!
Bye - Bye
The End