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Seaweed on seabed in a warm Aegean sea in Greece.
Short-snouted seahorse (Hippocampus hippocampus) in the thickets of sea grass Zostera. Black Sea. Odessa bay.
Red and green algae with blue water, underwater colors in the ocean  (mostly Asparagopsis armata and Ulva lactuca seaweeds), eastern Atlantic, Spain
Underwater world with corals and fishes.Image taken with Iphone 6Plus.
Beautiful tropical coral reef in coral garden in blue deep sea colorful fish swims around reefs, Red sea, Safaga, Egypt
Seagrasses Underwater Sea life   Scuba diver point of view  Sea grass Posidoniaceae
Underwater environment beneath the ocean surface with seaweed and kelp beds.
Seagrass - Posidonia oceanica
a seahorse is swimming in a seaweed.
Leafy Seadragon, Phycodurus eques, from  Western Australia.
Forest of seaweed in Notojima island.
hippocampus
Dense thickets of green marine grass Posidonia, on blue water background. Green seagrass Mediterranean Tapeweed or Neptune Grass (Posidonia). Mediterranean underwater seascape. Mediterranean Sea, Cyprus
Underwater image of the beautiful marine environment, sea grass and fish species of Formentera.\n\nThe sea grass Posidonia covers 76,500,000 square meters of sea bed, ensuring high biodiversity and creates a home for fish and other marine life. Futher, this marine plant effectively captures carbon dioxide (C02) from the atmosphere and therfore counters climate change. The secluded beaches and turquoise ocean in this part of the Mediterranean Sea are protected an have the status as a UNESCO World Heritage site due to the rich biodiversity.
Image made in Zakynthos.
Underwater environment beneath the ocean surface with seaweed and kelp beds.
Floats allowing brown sargassum algae to float in shallow sandy sea on sunny day
Leafy Seadragon, Phycodurus eques, from  Western Australia.
Green and red algae on underwater rocks (Enteromorpha, Ulva, Ceramium, Polisiphonia), Black Sea
Geirangerfjord near Hellesylt in Norway.  This is seaweed in the Fjord.
Soft coral Yellow Broccoli or Broccoli coral (Litophyton arboreum) Red sea, Safaga, Egypt
One Common Sea Cucumber (Bohadschia graeffei) is feeding on the coral reef.  It is standing up to extract passing plankton from the sea.  Sea cucumbers feed on algae, microscopic animals and waste.  Their digestive system recycles particles back into the  ecosystem.  Image taken whilst scuba diving at Ko Haa, Krabi Province, Thailand.  Sony mirrorless camera, with underwater housing and Scubalamp V6kPro lighting used.
Rainbow wrack alga Cystoseira tamariscifolia, underwater in the Atlantic ocean, Spain
Feather star on soft coral head in tropical blue ocean water
Underwater photo from a scuba dive in Bali
Floating sea weed (Codium Fragile)
Sea Life Underwater Rocks Sunlight, Underwater Life
Bunte Unterwasserwelt
Rocky seabed covered with Brown Seaweed (Cystoseira). Mediterranean underwater seascape. Mediterranean Sea, Cyprus
Seahorse in the sea of ​​Simeulue island, Aceh, Indonesia
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