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Platypus - Ornithorhynchus anatinus, duck-billed platypus, semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania. Strange water marsupial with duck beak and flat fin tail.

Lush green sea grass underwater- Posidonia Oceania

Water drops on waterline with lush green plants in rain forest swimming hole, shot in the Daintree rainforest, Queensland.

The seaweed at the edge of the Bank is submerged in blue water, in which fish swim.

Sea grass Scuba diving. Beautiful sea life, Underwater scene Sea grass bottom. Beautiful blue sea and scuba diver air bubble in background with copy space.

Colorful fish swimming in deep blue water aquarium with green water plants, fountain flowing in the fish tank, Relaxation time

sea bottom with fish and algae as a background

A rock formation underwater, covered in green algae and having a rough texture. The water is a deep blue and is clear enough to see through. The top of the image shows the water’s surface and the sunlight shining through, creating a beautiful contrast. The background consists of more rocks, adding some depth to the scene. The image has a bokeh effect, with the background being slightly out of focus, drawing attention to the main subject.

Intertidal - Tide Pool - with Colorful Animals in Southeast Alaska,USA in Elfin Cove, AK, United States

Alga vegetation in the shallow, moving sea water

$Underwater image of mangrove forest.\n Mangroves are plants that can live in saltwater. These important plants not only create a refuge for a vast number of marine animals, birds and reptiles but also play an important role in countering coastal erosion. \n\nThe dense network of roots and branches retain sediments and create a natural barrier protecting coastal communities against the more and more frequent floodings and hurricanes. \n\nFurther, mangroves have the capacity to sequester up to 10 times more CO2 per area compared to other forest ecosystems. Therefore these habitats serve as a blue carbon sink.\n\nUnfortunately, destruction of these important habitats due to development currently happens on a large scale worldwide.$

A sunken dead tree stump at the bottom of a lake

Salmon run up stream through the ladder at the Ballard locks.

Small lake with floating leaves of lotus flowers

Stream in the forest with clear water. Nature background and texture.

Huge manatee swimming close to Miami marina.

Salmon carcasses float on the bottom of the river. underwater photography. Alaskan Salmon Migration: A Journey Full of Challenges and Wonders. USA., 2017

Over-under view of beautiful coastline and scenic coral reef

An artistic split image of cypress leaves above and below the water surface

Underwater view with fish and algae in the water

Above and below the sea on the idyllic Pedn Vounder Beach, South Cornwall on a sunny June day.

Blue algae underwater in the ocean (seaweed Cystoseira tamariscifolia), Eastern Atlantic, Spain, Galicia

Corallina Red Marine Algae, Corallina officinalis, Salt Point State Park, Sonoma County, California, Rhodophyta

River otter diving in front of underwater window

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