theconversation.com The westward spread of zebra and quagga mussels shows how tiny invaders can cause big problems Zebra and quagga mussels entered the Great Lakes in large ships’ ballast water. Now, local boaters and anglers are spreading them into the southern and western US.
Impacts Intensifying hurricanes are helping invasive species spread across the U.S. More than a hundred species—including Asian swamp eels and zebra mussels—hitched a ride on Hurricane Isaias' floodwaters, scientists say.
