ENVIRONMENTAL SCIENCE NAME___________________
WEBQUEST: Trophic Levels of the Ocean
Follow the links and answer the questions completely to receive full credit 35pts
List the 4 levels of the Marine Food Chain. Briefly describe each level and identify 3 sample species.
How many Marine species have been identified?
Now click on the link that says: What we eat makes a difference in the Learn More Section
If you eat 1 pound of a Level 4 fish, how many pounds of each other fish would this represent?
Why is it not sustainable to fish for level 4 fish in the ocean?
Go down to “Seafood Filters” and define the following by clicking on the “?”
Omega 3 Content:
Select 3 fish/shellfish you eat and describe the sustainability, mercury level and Omega 3 content of each.
Look for substitutes that are sustainable in this link for the 3 fish that you chose -list other fish and their alternatives.
*** If you are done early go to http://www.cnn.com/SPECIALS/us/cnn-films-blackfish/index.html
and explore the documentary blackfish.