algae

algal

aquatic

biological

bloom

concept

damage

dirty

dump

dynamics

ebb

ecological

ecology

ecosystem

environment

environmental

eutrophication

flies

floating

flow

fluid

fragile

freshwater

green

growth

harmful

hazard

hydrodynamics

hypertrophication

impact

lake

liquid

motion

natural

nature

organisms

polluted

pollution

protection

river

rubbish

sewage

slime

stagnant

substance

toxic

unhygienic

water

waves

wild