green

toxic

algae

cyanobacteria

blooming

contaminated

polluted

water

river

lake

pollution

environmental

problem

concepts

phytoplankton

bloom

nature

environment

ecology

blue

dirty

contamination

colony

bacteria

global

harmful

algal

surface

color

microcystis

aeruginosa

dojran

stink

cyanophycea

bubble

floating

waste

background

growth

chlorophyll

microorganism

summer

hot

covered

closeup

texture

freshwater

flora

microscopic

concept

microbiology

weather

disaster

plankton

rotten

dangerous