Origin and Distribution

The Chinese Mitten Crab is native to what sea?
  A. The Baltic Sea.
  B. The Yellow Sea.
  C. The South China Sea.
  D. The Othotsk Sea (north of Japan).

Transportation

The Chinese mitten crab can be spread by _________?
  A. Ballast water.
  B. On ship hulls.
  C. People importing it for illegal sale at fish markets.
  D. All of the above.

Environmental Impact

Which of the following is NOT an ecological impact of Chinese mitten crab?
  A. Large population of mitten crabs outcompete native species for habitat.
  B. Mitten crabs eat many other organisms that live in the water (like fish, plants, and bugs).
  C. Mitten crabs latch onto sea turtles causing them to drown.
  D. Mitten crabs burrow into banks and levees causing erosion, damage, and muddy water.

Economic Impact

Fishermen lose money when the water is infested with mitten crabs because:
  A. Mitten crabs damage their nets.
  B. Mitten crabs fill up the fishing boats and cause them to sink.
  C. Mitten crabs reduce the number of fish they catch.
  D. Mitten crabs sell better in the market so the fisherman are not able to sell other fish.
  E. A and D.
  F. A and C.

Control

What is the best approach to controlling mitten crabs?
  A. Do nothing; even if they invade they will eventually die off due to lack of food and good habitat.
  B. Prevent them from invading in the first place by teaching people how they can prevent their spread.
  C. Wait until they have invaded, then round them up in a big fish truck and haul them back to China.
  D. Genetically engineer a super crab-killer-creature to release in areas where mitten crabs have invaded.