Shipping and International Trade
Invasive species are transported by maritime commerce. Vessels can be a significant pathway for the introduction or spread of invasive species through the discharge of ballast water containing invasive species or the transport of invasive species that have attached to the boat's hull. Species such as the Mediterranean white snail, gypsy moths, or wood-boring insects attach or burrow into products or packaging on one side of the Pacific and disembark on the other - in Washington State.
For more information, see the following Web sites: