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Test Your Knowledge: Mantis Shrimp Quiz
by Staff
Mantis shrimp are beautiful sea creatures with a long list of amazing (and violent) traits. How much do you know about this savage animal? Take this quiz to find out.

How do most mantis shrimp live their lives?

  • in small groups
  • in large groups
  • alone

What is the defining trait of mantis shrimp?

  • their relative intelligence
  • their powerful claws
  • their running speed

True or false: All mantis shrimp are smashers that use their power to beat prey into submission.

  • true
  • false

Other than vicious weapons, what other standout characteristic do mantis shrimp have?

  • highly evolved feet
  • complex eyes
  • humanlike blood

Why does this shrimp have "mantis" in its name?

  • Its mouth is shaped like that of a praying mantis.
  • It is just as aggressive as a praying mantis.
  • It tucks appendages under its body like a praying mantis.

True or false: Smasher shrimp strike faster than spearer shrimp.

  • true
  • false

The mantis shrimp belongs to which order?

  • echinozoa
  • veneroida
  • stomatopod

How big do the largest mantis shrimp grow?

  • about 8 inches (20 centimeters)
  • about 15 inches
  • about 20 inches

True or false: Mantis shrimp are nocturnal.

  • true
  • false

How many color-receptive cones do mantis shrimp eyes contain?

  • 16
  • eight
  • five

Compared to humans, how many more colors can a mantis shrimp detect?

  • four times as many
  • eight times as many
  • 10 times as many

How many species of mantis shrimp are there?

  • about 100
  • about 450
  • about 620

The mantis shrimp can be traced how far back into fossil history?

  • about 30 million years
  • about 100 million years
  • about 250 million years

How fast is the mantis shrimp's ability to strike with its hammer or spear?

  • 50 times as fast as a blink of an eye
  • 10 times as fast as a blink of an eye
  • five times as fast as a blink of an eye

Due to the extreme speed of the strike, what happens to the water around the shrimp's attack limb?

  • It changes color.
  • It cavitates.
  • It becomes harder than normal water.

How does cavitation affect the prey?

  • It adds a powerful shock wave to the attack.
  • It boils them.
  • It makes them more buoyant and easier to eat.

True or false: Mantis shrimp do not chase their prey.

  • true
  • false

Why do some female mantis shrimp have to lay two clutches of eggs instead of one?

  • so that she has something to eat during the offspring's larval stage
  • so the male can take care of one
  • so she can scurry back and forth between the two

How do mantis shrimp fight each other over territory?

  • They treat each other like prey.
  • They scuffle.
  • They trick each other.

Which set of appendages develops into the weapons that the shrimp uses to kill prey?

  • first set
  • second set
  • third set

What's the longest that some mantis shrimp live in the wild?

  • 18 months
  • three years
  • 20 years or longer

True or false: Mantis shrimp are all monogamous.

  • true
  • false

At what speed does the shrimp unleash its hammer weapon?

  • 30 feet per second (9 meters per second)
  • 75 feet per second
  • 90 feet per second

How many creatures on Earth can create circular polarization with their visual system?

  • one
  • three
  • six

True or false: Mantis shrimp are not actually shrimp.

  • true
  • false

The taste of mantis shrimp flesh is often compared to what?

  • lobster
  • shrimp
  • chicken

How does a mantis shrimp process all of the visual information collected by its eyes?

  • in the eye
  • in the brain
  • in the brain stem

As time goes by, what happens to the mantis shrimp's clublike weapon?

  • It breaks down.
  • It gets sharper.
  • It becomes articulated.

What's one reason that the shrimp's eyes process visual information instead of the brain?

  • speed
  • lack of intelligence
  • sea water effects the brain

Why do many aquarists avoid keeping mantis shrimp as pets?

  • They are too violent.
  • They eat just about everything.
  • They are hard to care for.