A Quiz About Marine Life

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| By Khangvinh240298
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    The octopus has three hearts. True or False ?

    • True
    • False
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About This Quiz

When someone says marine life, we think about sharks and turtles, but there is so much more to it. Let's dive into the quiz!

A Quiz About Marine Life - Quiz

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  • 2. 

    Seahorse eggs are:

    • Carried by the female

    • Laid on coral

    • Carried by the male until they hatch

    Correct Answer
    A. Carried by the male until they hatch
    Explanation
    Male seahorses give birth by releasing their young offspring into the water once the eggs hatch

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  • 3. 

    On average, a shark can lose as many as 20,000 – 30,000 teeth over the course of their lifetime.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The amount of teeth a shark can lose over its lifetime does depend upon the species. The sharks that have several hundred teeth in their jaws will lose more teeth overall than the sharks that only have a dozen teeth. So, amazingly, a shark can go through about 30,000 to 50,000 teeth over the span of its life

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  • 4. 

    What is a shark’s skeleton made of?

    • Bone

    • Cartilage

    • Titanium

    • Keratin

    Correct Answer
    A. Cartilage
    Explanation
    Sharks have skeletons made of cartilage and connective tissue. Cartilage is flexible and durable, yet is about half the normal density of bone.

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  • 5. 

    True or False? Polar oceans are too cold to be home to animals?

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Yet despite these inhospitable conditions, the Arctic Ocean is teeming with life. Great polar bears roam the Arctic ice and swim the Arctic seas. Supporting these top predators is a complex ecosystem that includes plankton, fish, birds, seals, walruses, and even whales.

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  • 6. 

    The world's ________ fish is the whale shark, which can grow to 40 feet long and weigh an average of 20 tons.

    Correct Answer
    largest, biggest
    Explanation
    Despite their tremendous size and intimidating appearance, whale sharks are commonly docile and approachable. Whale sharks are filter feeders and sieve plankton through their gills for much of their nourishment. They also sieve squid, krill, and small fish.

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  • 7. 

    All 17 species of penguins are found exclusively in the ________ Hemisphere.

    Correct Answer
    Southern
    Explanation
    All penguins live in the Southern Hemisphere, though it is a common myth that they all live in Antarctica. In fact, penguins can be found on every continent in the Southern Hemisphere.

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  • 8. 

    Sea turtles drink a lot of seawater. How does it get rid of the excess salt in its body?

    • By sneezing

    • By vomiting

    • By going on a low-salt diet

    • By crying

    Correct Answer
    A. By crying
    Explanation
    n the process of laying eggs scientists have observed tears coming out of turtle's eyes. However, that doesn't mean sea turtles are crying. The tear is a result of a process through which turtles get rid of the excess of sea salt.

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  • 9. 

    Dolphins breath through their ________ 

    Correct Answer
    lungs
    Explanation
    Dolphins are mammals and breathe air into their lungs, just like we do. Dolphins cannot breathe under water like fish can as they do not have gills.

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  • 10. 

    What are the main categories of sea life?

    • Swimmers (Nekton)

    • Creatures on the sea floor (Benthos)

    • Non-swimmers

    • Floaters (Zooplankton)

    • Microscopic creatures

    Correct Answer(s)
    A. Swimmers (Nekton)
    A. Creatures on the sea floor (Benthos)
    A. Floaters (Zooplankton)
    Explanation
    Marine animals are divided into three groups: zooplankton, nekton, and benthos. Zooplankton are drifting animals. Nekton are the free swimmers and probably the largest portion of familiar animals found in the ocean belong to this class. The third type of sea animal spends its entire life on or in the ocean bottom. This group of marine animals is called the benthos.

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  • 11. 

    What do walruses use their large tusks for?

    • Digging up clams.

    • Swimming

    • Hauling themselves out of the water.

    • Defensive weapon for protection from polar bears or killer whales.

    Correct Answer(s)
    A. Digging up clams.
    A. Hauling themselves out of the water.
    A. Defensive weapon for protection from polar bears or killer whales.
    Explanation
    Both male and female walruses have long ivory tusks, although the tusks of the males tend to be longer and thicker than those of females. The tusks are the walrus' very long upper canine teeth, and they grow to an average length of about 36 cm / 14 inches, but they can grow as long as 100 cm / 39 inches in males.

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  • 12. 

    Which of these marine animals are facing a high risk of extinction in the near future ?

    • Blue Whale

    • Jellyfish

    • Green Sea Turtle

    • Fur Seal

    • Dugong

    Correct Answer(s)
    A. Blue Whale
    A. Green Sea Turtle
    A. Dugong
    Explanation
    Like other large whales, blue whales are threatened by environmental change including habitat loss and toxics. Blue whales can also be harmed by ship strikes and by becoming entangled in fishing gear. Worldwide, the green turtle continues to be hunted and its eggs harvested. Much of that is for human consumption, but trade of turtle parts remains a profitable business. Uncontrolled coastal development, vehicle traffic on beaches, and other human activities have directly destroyed or disturbed sea turtle nesting beaches. Dugongs are threatened by sea grass habitat loss or degradation because of coastal development or industrial activities that cause water pollution.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Apr 09, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • May 09, 2017
    Quiz Created by
    Khangvinh240298
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