Sharks: Predators of the Deep

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Sharks Predators of the Deep

• Guess the Covered Word Lesson
• Created by Morgan Blanton

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Guess the Covered Word Reading Strategy

• Start
• Where is the word? Beginning, middle, or end of
  the sentence? What about grammatical cues?
• Think
• What makes sense?
• Look
• How long is the word?
• Listen
• Letters, suffixes, prefixes, syllables known
  little words

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Think
Guess the Covered Word Strategy
Start
Look
Listen
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• According to scientists, sharks have been
  around for 400 million years! They are such good
  predators and so good at surviving, that they
  havent had to evolve, or change, in over 150
  million years. They were even around before the
  dinosaurs! This prehistoric shark was called the
  megalodon.

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Megalodon and the Great White

• If you were to compare the megalodon and the
  great white shark, the white shark would look
  tiny next to the megalodon.

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Teeth

• A shark may go through 20,000 teeth in its
  lifetime. It will never run out of teeth! It is
  constantly growing new ones, so if it loses one,
  another slides up in its place. As you can see
  in the picture, sharks have rows and rows of
  backup teeth.

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Carnivores

• Sharks are carnivores, which means that they are
  meat eaters. They feed on other sea animals and
  sometimes even other sharks. You can tell that
  they are carnivores because of their sharp teeth.
  Plant eating animals have dull teeth for
  grinding their food, but meat eaters need sharp
  teeth to help them tear it.

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Gentle Giants

• The largest sharks are not the most ferocious,
  though. The basking shark, the whale shark, and
  megamouth sharks are not aggressive carnivores,
  although they do eat other animals. They feed on
  plankton, which are tiny shrimp-like creatures.
  They swim through the water with their mouths
  open, letting gill rakers in the back of their
  throats strain the plankton from the water.

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Shark Babies

• Sharks have babies in three different ways,
  depending on which type of shark it is. Some lay
  eggs like a bird does. Others hatch eggs inside
  the mother shark. There are others that give
  birth to live pups like humans give birth to
  live babies. Some sharks have only one baby in
  their lifetime, but others can have up to 100.
  Sharks do not care for their babies after they
  are born.

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Swell Shark Egg
Horn Shark Egg
Zebra Shark Pup
Black Tip Pup
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Shark Senses

• A sharks most keen sense is its ability to
  smell. Two thirds of its brain is dedicated to
  this sense. Sharks have two senses that humans
  do not have. They have a lateral line that
  help them detect movement in the water. They
  also have an organ that can feel electrical
  currents given off by other animals.

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References

• Kids Zone
• http//www.kidzone.ws/sharks/facts.htm