National Geographic's Invasive Species: provides a short list of invasive species

The National Wildlife Federation's Invasive Species: provides general information about invasive species

USDA National Invasive Species Information Center: provides a list of invasive species. Click on Species Profiles, located within the first paragraph

Mississippi Forestry Commission Invasive Plants: lists and describes Mississippi's most invasive plants

Creepy fish. Wild hogs. Obnoxious birds. What has their invasion done to Mississippi? (Clarion Ledger): a news article discussing some of the state's invasive species

Defenders of Wildlife Invasive Species in Mississippi

4) Enter the following in Google search: zebra mussel site:.gov

or

zebra mussel site:.edu 

or

zebra mussel site:.net

5) Notice there is a colon and a period after the word site followed with the domain name.

And that is it!