The Ultimate Mine-Disarming Dolphins Quiz
by Staff
Who would have thought that dolphins might be an important part of a war effort? Dolphins have natural abilities that allow them to detect underwater mines, potentially saving many lives and millions of dollars of marine equipment. Take this quiz to learn more about the dolphin's role in disarming mines.

What is the most common cause of ship damage?

  • crashing into rocks
  • mines
  • active enemy attacks

Since when have dolphins been used to find underwater mines?

  • 1960s
  • 1970s
  • 1980s

How are the dolphins trained?

  • They are shown what a mine looks like.
  • They are rewarded when they find a suspicious object.
  • They are exposed to a scary sound when they approach a mine during training.

How do the dolphins indicate to humans that they have spotted a mine?

  • They touch a certain sign with their nose.
  • They make a certain noise.
  • They swim around excitedly.

How is the location of the mine marked?

  • The Navy notes the location on their navigation system.
  • A special device is left in the area.
  • The dolphin is left in the area to warn approaching ships.

Why are dolphins such useful mine detectors?

  • Dolphins can distinguish man-made objects.
  • Dolphins can diffuse mines.
  • Dolphins can identify the type of mine.

What does sonar refer to?

  • a program that compiles music
  • sound navigation and ranging technology
  • a device that creates sounds under water

Why is sound good for detecting things under water?

  • It is difficult to shine lights under water.
  • It is easy to hear under water.
  • It is difficult to see under water.

Dolphins use sonar technology to find objects. How does sonar work?

  • The dolphin interprets a sound bouncing back to it.
  • The dolphin listens to sounds around it.
  • The dolphin creates high pitch noises.

What is the type of sonar used by dolphins called?

  • passive sonar
  • echolocation
  • subsonar

From how far away can dolphins determine the difference between a BB gun pellet and a corn kernel?

  • 10 feet
  • 30 feet
  • 50 feet

Which part of the dolphin's body absorbs the echo?

  • the jaw
  • the forehead
  • the inner ear

Why do dolphins make different clicking sounds?

  • Different clicks are used for different purposes.
  • Different clicks are different frequencies.
  • They cannot maintain a signal tone.

Why are dolphins prone to getting caught in nets?

  • The nets reflect a confusing signal.
  • The nets do not reflect a signal.
  • The nets reflects the same signal as food.

How are dolphins prevented from getting caught in nets?

  • Nets come with beacons.
  • Nets are not allowed in dolphin areas.
  • Dolphins have been trained to look out for nets.

How does the navy defend its use of dolphins for mine-disarming to animal rights groups?

  • Dolphins are well trained.
  • Dolphins are trained to detect mines from a distance.
  • Dolphins enjoy the human interaction.

What sort of object can detonate a mine?

  • a heavy ship
  • a whale
  • an octopus

What is a potential hazard of transporting dolphins to potentially mine-infested waters?

  • air sickness
  • weakening the immune system
  • discomfort

What happens to dolphins when they are transported to mine-infested waters?

  • Their immune system is weakened.
  • Their skin dries out.
  • They become malnourished.

What is a concern for dolphins when transferring them to different waters?

  • The waters are too cold.
  • The dolphins will get lost.
  • Both of the above.