Florida faces another harmful algae bloom, declares emergency

Data: European Space Agency Sentinel 3 satellite via NOAA; Map: Axios Visuals

An algae bloom has taken over Florida's largest freshwater lake and spread to surrounding areas, turning waters green and threatening drinking water, as well as tourism and wildlife.

Why it matters: Big algae blooms hit waterfront economies that are especially depending on boating and fishing, like those in Florida. This marks the ninth large algae bloom in the state since 2004.