Origin and Distribution

Examples of marine invasive species introduced via the shipping industry
ORTEP Association

Pathways of Aquatic Introductions
Washington Sea Grant

Exotics of Lake Ontario
New York Sea Grant

Zebra mussels in North America, the invasion and its implications
Ohio Sea Grant
http://ohioseagrant.osu.edu/_documents/publications/FS/FS-045%20Zebra%

100 of the World's Worst Invasive Alien Species
Global Invasive Species Database

Round gobies invade North America
Ohio State Sea Grant