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Blue-green algae (Cyanobacteria) blooming in polluted water. Photosynthetic bacteria organisms grow in rivers or lakes. A close-up.
The Haystack Rock. a monolith, is the third-tallest intertidal structure in the world. The tidal pools around are home of many intertidal animals.
Green algae covered boulders at sea coast beach. Background and surface texture. Sea algae or Green moss stuck on stone. Rocks covered with green seaweed in sea water.
Backgrounds
Seabed with sand, shells and algae under small waves with light reflections as background
Seaweed and sand on North Sea coastline
Dirty and polluted water surface
transparent waters sea
Green algae covered rocks, Yalong Bay, Sanya City, South China
A close-up of the texture of sand on a summer beach,
Blue-green algae, Cyanobacteria also known as Cyanophyta. Blossoming bacteria plant time in summer in Baltic Sea by beach.
Coastal scenery of Tangshan, China
playing with the animals
Bladderwrack or rockweed on the stony beach at Hvalsey Beach outside Qaqortoq - Julianehåb on a sunny summers day
Green water polluted with blue-green algae Cyanobacteria
The wind blows across the river surface, causing different ripples, and the silt at the bottom of the river can be seen through the river water
Structures visisble at low tide as backgrounds
Chalan Kanoa, Saipan, Northern Mariana Islands: Rippled shallow sea water surface background with golden sand sea bottom - beach on the  west coast (Philippine Sea, Pacific Ocean).
natural background, sandy shore and water closeup
Green algae in see
Waves and glare on the surface of the water. Shallow. Lake. Background
Water ripple surface green algae bloom. Eutrophic water pollution
Coastline picture on charente maritime  atlantic ocean  with rocks and algae
View into a river in Australia.
[Background material] Ripples of light reflected in the transparent sea.
Sea water on the coast of Guinea Bissau
Fresh green kelp or seaweed under a thin film of water during ebb-tide in the Wadden Sea, The Netherlands
Brown and green tide pool close-up of seagrass flowing in the current.
Algae at a beach of the Baltic Sea
Rivière Des Galets, Savanne District, Mauritius: Saint Felix public beach - south coast - rippled, transparent, emerald waters in the coastal reef
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