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Blue-green algae (Cyanobacteria) blooming in polluted water. Photosynthetic bacteria organisms grow in rivers or lakes. A close-up.
Algae bloom on the Havel River, Brandenburg-State
Blooming green water. Green algae polluted river
Above view of Algae in river Corrib, Wild Atlantic Way, Galway, Ireland.
Background with stone parapet overgrown with wet seaweed. Stand covered with algae. Soft background with selective focus.
Green Algae
Algae Lake Okeechobee Florida
Green algae in see
Green algae on rocks on wet sand beach in shallow water.
Pollution by flowering green algae. Eutrophic water
Green algae in water on sandy beach. Water pollution. Ecological problem
Fish in clear lake
Polluted green river water. Toxic bacteria and harmful waste pollute water. Ecological problems.
Green Algae Goo Sludge on Pond Surface Detail - Detail of organic material with vibrant green colors.
Blooming green water. Green algae polluted river
Background image of fine green seaweed, growing on wooded groyne, at low tide. Portobello beach, Edinburgh Scotland.
Blue-green algae, Cyanobacteria also known as Cyanophyta. Blossoming bacteria plant time in summer in Baltic Sea by beach.
Bladderwrack or rockweed on the stony beach at Hvalsey Beach outside Qaqortoq - Julianehåb on a sunny summers day
Water pollution by blooming blue-green algae - Cyanobacteria is world environmental problem. Water bodies, rivers and lakes with harmful algal blooms. Ecology concept of polluted nature.
Pile of Sargasso algae on the beach of playa del Carmen during day of March
Beautiful view of blue water of Atlantic Ocean with seaweed on surface of water. Miami Beach. USA.
Algae floating on the surface of river,Guilin,China
Baltic sea coast with stones covered by seaweed. Blue hour time. Long exposure.
Thermophilic Microbial Mat at Norris Geyser Basin in Yellowstone National Park, Wyoming. These olive-green mats are the result of cyanobacteria mixed with iron.
Dirty and polluted water surface
Brown and green tide pool close-up of seagrass flowing in the current.
View of the water on the sunny day. Copy space. Natural background.
Small mere in  Wachirabenchathat Park (Rot Fai Park) in Bangkok
A close-up of algae.
Brown seaweed in brackish water - seen in a canal in Venezia in the northern part of Italy
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