Dolphins

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Dolphins

• Ocean Dolphins and Pink Dolphins

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Compare and Contrast

• A comparison tells how two or more things are
  alike. Clue words such as like or as show
  similarities.
• A contrast tells how two or more things are
  different. Clue words such as but or unlike show
  differences.

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Pink Dolphins

• Live in rivers, not in the oceans.
• Eat small turtles, crabs, cat fish, and other
  fish.
• They have many teeth that help them to crush the
  shells and eat the turtles.
• They send out pulses of sound, from inside their
  foreheads. These pulses travel through the water,
  and when the pulses hit an object, such as a
  fish, the sounds bounce back to the dolphin.
• (echolocation)

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Flexibility

• Pink dolphins are very flexible they can even
  touch their tale to their nose. Unlike the pink
  dolphin, ocean dolphins are not flexible they do
  not bend very well.
• Think About It
• Why do you think flexibility is so important for
  the pink dolphin?

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Physical Appearance

• Pink dolphins can also be found in light gray or
  brown colors.
• Unlike the dolphins that swim in the ocean, pink
  dolphins do not have a tall, pointed fin their
  back instead, they have a low ridge which makes
  them difficult to spot.
• Pink Amazon River dolphins range from 6 - 10 feet
  long and weigh up to 355 pounds when they are
  fully grown.
• Pink dolphins are smaller than sea dolphins but
  they have longer snouts, which helps them to hunt
  for food at the bottom of the river.

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Pods

• Pink dolphins have no natural predators in the
  Amazon River other than humans, therefore they
  are usually found alone or in pairs hunting for
  food.
• Sometimes pink dolphins form pods of 5 to 8
  members for herding fish
• Think About It
• Why do dolphins in the ocean form pods (or
  groups)?

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More about Dolphins

• Pink dolphins sleep upside down, but ocean
  dolphins do not.
• Both ocean dolphins and pink dolphins are
  intelligent and sociable.
• Both ocean dolphins and pink dolphins use
  echolocation to locate objects in the water.
• Dolphins cannot breathe underwater, they have a
  blow hole which they use to blow out water in
  their lungs.

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Compare and Contrast

• Ocean Dolphins Pink Dolphins
• - Live in the ocean - Do not live in the
  ocean
• - Not flexible - Flexible
• - Swim in pods - Usually found
  alone
• - Tall, pointed fin - Low ridge on
• on their back their back
• - Are larger than pink - Have longer snouts and
  pointier teeth
• Dolphins
• - Do not sleep upside down - Sleep upside down

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Pink Dolphin Video
http//mefeedia.com/entry/jean-michel-cousteau-oce
an-adventures-pink-dolphins-pbs/9693926/