Details are the responsibility of the organizations mentioned .
Many ANS come to our ports in ballast water and on the hulls of large, ocean-going vessels. Others come by hitching rides on boats, planes, trains, trucks and cars. People intentionally and unintentionally introduce them for example, they might set free unwanted aquarium plants and pets into the wild or use potential invaders in backyard flower and water gardens or in landscaping projects. Others arrive through canals and water diversions. Though usually not a problem in their native waters, these same organisms can reek havoc in new suitable habitats that offer few enemies.