In the state of Washington you can be fined for towing a boat/trailer on the road with plant fragments attached.

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

Inspectors will ask you where and when your watercraft was last used.

You decide to take your boat from Lake Samish to Lake Terrell. How can you help prevent the spread of Asian clams between these two lakes?

Zebra and quagga mussels can attach themselves to hard surfaces but can be removed quite easily with a damp cloth.

Aquatic invasive species can clog water intake pipes and impede the flow of water to municipal water supplies, irrigation operations, and power plants.