Look at the title of the video below: "Nature's Perfect Predator: Great White Shark".
 
  1. What does "predator" mean?
     
    • A predator is an animal that kills other animals for food.
       
    • A predator is a very large sea creature.
       
     
 
 
Watch the following video to find out interesting facts about sharks.
After or while you watch the video, try to answer the questions below.
 
  1. When did sharks evolve?
     
    • Scientists believe that sharks evolved over one million years ago.
       
    • Scientists believe that sharks evolved over one hundred million years ago.
       
     
  2. How long are sharks?
     
    • They can grow up to 20 feet long, which is about the length of two cars.
       
    • They can grow 20 meters long, which is about the length of two buses.
       
     
  3. Which senses do sharks use to hunt their prey?
     
    • Sharks use four senses at once: sight, hearing, smell, and electro sense.
       
    • Sharks use all six senses at once.
       
     
  4. What are sharks built like?
     
    • Sharks are built like an airplane.
       
    • Sharks are built like a speedboat.
       
     
 
 
The video above has made sharks look quite dangerous. Watch the video below to find out how dangerous they really are.
To improve your vocabulary on sea creatures, you can use the wordlist below. You can practise the new vocabulary with the vocabulary trainer at the end of this page.

1. Wordlist

  • seal
    • seal, seals[siːl](noun)
    • Definition:
      • a fin-footed, fish-eating mammal, typically sleek-bodied and barrel-shaped
    • Example:
      • Seals can hold their breath for nearly two hours underwater.
  • shark
    • shark, sharks[ʃɑː(r)k](noun)
    • Definition:
      • a type of fish with a full cartilaginous skeleton and a highly streamlined body, diversifying into 440 species, found in all seas and common down to depths of 2,000 metres (6,600 ft)
    • Example:
      • The shark's survival is under serious threat from fishing and other human activities.
  • whale
    • whale, whales[weɪl](noun)
    • Definition:
      • a marine mammal with forelimbs modified as fins, a tail with horizontal flukes, and nasal openings on top of the head, ranging in size from the blue whale, the largest animal known to have ever existed at 35 m (115 ft) and 150 tonnes (150 lbs), to various smaller species
    • Example:
      • Whales collectively inhabit all the world's oceans and number in the millions.
  • tortoise
    • tortoise, tortoises[tɔː(r)təs](noun)
    • Definition:
      • land-dwelling reptiles, varying in size from a few centimeters to two meters and shielded from predators by a shell
    • Example:
      • Female tortoises dig nesting burrows in which they lay from one to thirty eggs.
      • Synonym(s):
        turtle
  • shell
    • shell, shells[ʃɛl](noun)
    • Definition:
      • a hard, protective outer layer, that was created by a sea creature, a marine organism
    • Example:
      • There is often a surprising degree of variation in the exact shape, pattern, ornamentation, and colour of the shell.
  • dolphin
    • dolphin, dolphins[ˈdɒlfɪn](noun)
    • Definition:
      • an aquatic mammal closely related to whales and porpoises, inhabiting mostly the shallower seas of the continental shelves, famed for its intelligence and occasional willingness to approach humans
    • Example:
      • Dolphins can hear frequencies ten times or more above the upper limit of adult human hearing.
  • fish
    • fish[ˈfɪʃ](uncountable noun)
    • Definition:
      • a cold-blooded vertebrate animal that lives in water, moving with the help of fins and breathing with gills
    • Example:
      • They have many fish in their aquarium.
 
 

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