Ballast WaterEcological Impact

Ballast Water Video

• Watch the video on ballast water in order to explain:1. What is ballast water?2. Why do ships use ballast water?3. What can be harmful about ballast water?4. Name at least 2 organisms that have come from

ballast water.5. How have they caused problems in marine

ecosystems?6. How many species have been found in the Great Lakes

that have likely come from ballast water?

Zebra Mussells

Water Comb Jelly

Independent Research

For the invasive species provided please explain:• What trophic levels have been effected by the

introduction of this species?• How did this species get introduced to the

area?