Dolphins - EdZone by dffhrtcv3

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									     Dolphins
One of the many creatures of the
             sea!
                              Dolphins
•   Dolphins are warm blooded
    mammals. They have round teeth
    and hair on their body, though the
    amount of hair they have is very
    little.
•   Dolphins are part of the cetaceans
    family. The cetaceans family
    includes both dolphins and
    whales. Dolphins are the “toothed
    whale.”
•   Dolphins vary in color.
•   Adult dolphins grow to be about 8
    or 9 feet long.
•   Dolphins give birth to a live baby.
How a dolphin breathes
           •   Dolphins breathe through their
               blowhole which is located on the
               top of their head.
           •   Dolphins can refill their lungs in a
               fifth of a second. As it breaths,
               the air leaves the blowhole at a
               speed of 100 mph.
           •     There are complex nerve cells
               located around the hole that sense
               when the hole is near air and will
               then open.
           •   If water gets into the blowhole, a
               dolphin will drown, so powerful
               muscles close the hole as a
               dolphin dives into the water.
A glance into the Dolphin World




• Click on the picture to view two videos of
  dolphins!
        More facts about Dolphins
•   Dolphins can hold their breath for 5 to 8 minutes.
•   Each dolphin has its own whistle that distinguishes it from another. It’s like
    having your own finger print.
•   Dolphins usually live for 20 years, but some have been known to live for up
    to 40.
•   Dolphins sleep partly awake. This means that they rest one side of their
    brain at a time.
•   Dolphins closest land relatives are the cow, the pig and the deer.
•   The gender difference between a male and a female dolphin can only be
    seen up close. A women has a mammary slit on the underside for birth.
•   The common dolphin can be found in all temperate and tropical seas.
•   There are dolphins that live in rivers also, but due to pollution and dams,
    river dolphins are in danger of extinction.
             The Difference between a Dolphin and a Porpoise



               Dolphins                       Porpoise




•   Dolphins and Porpoise are both members of the whale family.
•   Both have teeth.
•   The body type of a dolphin and a porpoise are different. A dolphin has a large
    forehead.
•   Another way to tell the difference between a dolphin and a porpoise is to look
    at their teeth. When a dolphin’s tooth is cut in half, it is round. All porpoises’
    teeth are flat.
•   A dolphin has a beak-like nose and a curved dorsal fin. A porpoise has a blunt
    like nose and has a triangular dorsal fun.
                           Bottlenose Dolphin
•   A Bottlenose dolphin is one type of dolphin.
•   They can grow to be 12 feet long and weigh
    1,400 pounds.
•   A Bottlenose dolphin has a distinct beak, as
    you can see in the diagram located to the
    right.
•   They eat fish and squid; fish that are found
    at the surface of the water.
                                                      •   Click the above picture for activity!
•   Dolphins have one main predator, the shark,
    but often, dolphins get caught in fishing nets.
•   Bottlenose dolphins live in small pods of 12,
    but many times a bunch of small pods will
    join together to form a huge congregation of
    hundreds of dolphins. Bottlenose dolphins
    are very social.
•   Dolphins can dive down 1,000 feet and can
    jump 20 feet into the air.
•   They live in warm seas and some temperate
    sea waters worldwide.
A wave goodbye from the Dolphins!

								
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