Do HABs occur in the Great Lakes?

Yes. The Great Lakes have a history of HABs, particularly in warm, shallow areas such as Saginaw Bay and western Lake Erie. Scientists have attributed this latest resurgence of HABs to the invasion of zebra and quagga mussels.

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1. What effects do HABs have on people and wildlife?
2. What factors affect HABs?
3. Do HABs occur in the Great Lakes?
4. What can I do about HABs?