Algae
Algae are a highly diverse group of plant-like organisms that can photosynthesize. Frequently found in aquatic environments, they can take many forms. Algae can be attached to hard surfaces, floating in mats on the surface of the water, or evenly dispersed. They are an important source of nutrients in both fresh and saltwater ecosystems and produce oxygen needed by fish and other aquatic species. However, in large quantities, they can become a nuisance or even toxic.
There are two important groups you should be aware of:
- Blue-green algae, also known as cyanobacteria, can produce toxins harmful to people and their pets. It typically resembles green paint spilled on the surface of the water or pea soup
- Cladophora algae is a group of filamentous algae with a threadlike texture that grow on hard surfaces. Once detached from the hard surface, they can be washed onshore and form dense rotting mats. These are breeding grounds for harmful bacteria like E. coli and botulism.