How do quagga and zebra mussels spread from an affected water body to another water body?

What are the three important steps for preventing the spread of aquatic invasive species that should be done every time you go boating?

Zebra and quagga mussels impact recreational opportunities by:

Quagga and zebra mussels came to North America in the ballast tanks and on the anchor chains of large, transoceanic ships that entered the Great Lakes.

Aquatic invasive species can make shoreline areas hazardous and uninviting for recreational users and waterfront property owners.

How can Asian clams be transported between waterbodies?