With the discovery of zebra and quagga mussels in several western states, Colorado Parks and Wildlife officials continue to ask boaters to help protect public waters from all aquatic nuisance species (ANS). The mussels are a non-native, invasive species that spread very quickly, causing harmful effects to the environment and man-made water delivery systems. All boaters, belly boaters, and fishermen wading into the water are advised to take a few simple, precautionary steps every time they go to a lake, river or stream. Before leaving a lake or other waterway, boaters and other water users should clean the hull of your boat; drain the water from the boat, live well and the lower unit of the engine; dry the boat, fishing gear, and equipment; inspect all exposed surfaces, and remove all plant and animal material. For more information, visit the Colorado Parks and Wildlife website.