Underwater environment
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An underwater environment is an environment of, and immersed in, liquid water in a natural or artificial feature, such as an ocean, sea, lake, pond, reservoir, river, canal, or aquifer. Some character
Great Barrier Reef, Australia
The world ocean is the most visible part of Earth from space.
Clouds over the Atlantic Ocean
Samur River in Azerbaijan – In the natural landscape
Great Barrier Reef
Videos
The Great Barrier Reef is the world's largest coral reef system, composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres over an area of approximately 344,400 squa
Underwater environment
…Great Barrier Reef, Australia An underwater environment is an environment of, and immersed in, liquid water in a natural or artificial feature (called a body of water…
Image of part of the Great Barrier Reef adjacent to Queensland, taken from the International Space Station
Aerial photography
Heron Island, a coral cay in the southern Great Barrier Reef
Aerial view of Arlington Reef