Description: Underwater Constructions | How do Engineers Make Them?, How Are Structures Built Underwater? Amazing Underwater Structures, How are Underwater Structures Built?, How Underwater Structures are Built? Cofferdam Explained!
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Underwater refers to the region below the surface of water where the water exists in a natural feature (called a body of water ) such as an ocean , sea , lake , pond , or river .
Three quarters of the planet Earth is covered by water. A majority of the planet's solid surface is abyssal plain , at depths between 4,000 and 5,500 metres (13,100 and 18,000 ft) below the surface of the oceans. The solid surface location on the planet closest to the centre of the orb is the Challenger Deep , located in the Mariana Trench at a depth of 10,924 metres (35,840 ft) . Although a number of human activities are conducted underwater — such as research, scuba diving for work or recreation , or
Underwater! is a 1955 adventure film directed by John Sturges and starring Jane Russell and Richard Egan .