Invasive zebra mussels colonize a rock at Lewis and Clark Lake in Yankton, S.D.
Sam Stukel, USFWS/Flickr
According to a new UN report, invasive species do more than US$423 billion in damage worldwide every year. Four articles explore examples, from mollusks to poisonous fish.
A boat propeller encrusted with zebra mussels.
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.
Caddisfly larvae rearrange pebbles on the river bed to build themselves a shelter.
FJAH / shutterstock
Rivers are shaped by storms, floods, humans and… aquatic invertebrates.
Tiny creatures, big problems.
Government of Alberta
The UK’s environment agency has confirmed quagga mussels, a fresh or brackish water mollusc, have been found in a reservoir near London. Quagga were previously identified as one of the single greatest…