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First ever underwater university lectures

Students at the University of Essex have taken their lectures to a whole new level – 18 metres under the sea in remote Indonesia to be precise.

Other Sciences - Other

7 hours ago

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Reef

In nautical terminology, a reef is a rock, sandbar, or other feature lying beneath the surface of the water (six fathoms or less at low water).

Many reefs result from abiotic processes—deposition of sand, wave erosion planning down rock outcrops, and other natural processes—but the best-known reefs are the coral reefs of tropical waters developed through biotic processes dominated by corals and calcareous algae. Artificial reefs such as shipwrecks are sometimes created to enhance physical complexity on generally featureless sand bottoms in order to attract a diverse assemblage of organisms, especially fish.

This text uses material from Wikipedia, licensed under CC BY-SA

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