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June 27, 2019

Giant Sea Creature That Will Scare You From Going Into Water


The sea is the connected body of salt water that covers over 70 percent of the Earth’s surface. The sea is important in moderating the Earth’s climate, and in providing food and oxygen, and in its enormous diversity of life, and for transport.

The study of the sea is called oceanography. The sea has been travelled and explored since ancient times, but its scientific study dates broadly from the voyages of Captain James Cook to explore the Pacific Ocean between 1768 and 1779.

Seawater is characteristically salty. The main solid in solution is sodium chloride, but the water also contains chlorides of potassium and magnesium, alongside many other chemical elements, in a composition that hardly varies across the world’s oceans.


However, the salinity varies widely, being lower near the surface and near the mouths of large rivers and higher in the cold depths of the ocean. The sea surface is subject to waves caused by winds. Waves decelerate and increase in height as they approach land and enter shallow water, becoming tall and unstable, and breaking into foam on the shore. Tsunamis are caused by submarine earthquakes or landslides and may be barely noticeable out at sea but can be violently destructive on shore.

Winds create currents through friction, setting up slow but stable circulations of water throughout the sea. The directions of the circulation are governed by several factors including the shapes of the continents and the rotation of the earth.

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