Invasive Mussels in Thunder Bay National Marine Sanctuary

February 2020

Invasive species are organisms that cause ecological or economic harm in environments where they have been introduced. They can make their way to ocean and Great Lakes ecosystems through the ballast water of oceangoing ships, intentional and accidental releases of aquaculture species, aquarium specimens or bait, and other means. Today, meet two invasive species in Thunder Bay National Marine Sanctuary.