Blue-Green Algae – New Brunswick

Blue-green algae (Cyanobacteria) are photosynthetic bacterial organisms, naturally found in many types of water systems including lakes, rivers and wetlands. Under the right conditions, they can increase in numbers quickly to form a bloom or floating algal mats. Blooms can range in colour from dark green to yellowish brown.

https://www2.gnb.ca/content/gnb/en/departments/ocmoh/healthy_environments/content/blue_green_algae.html