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These are organized by a classification scheme developed exclusively for Cosma. More…
ocean : a : the whole body of salt water that covers nearly three fourths of the surface of the earth b : any of the large bodies of water (as the Atlantic Ocean) into which the great ocean is divided — Webster
Ocean is a body of saline water that composes much of a planet’s hydrosphere. On Earth, an ocean is one of the major conventional divisions of the World Ocean, which covers almost 71% of its surface. These are, in descending order by area, the Pacific, Atlantic, Indian, Southern (Antarctic), and Arctic Oceans. The word sea is often used interchangeably with “ocean” in American English but, strictly speaking, a sea is a body of saline water (generally a division of the world ocean) partly or fully enclosed by land.
Saline water covers approximately 72% of the planet’s surface (~3.6×108 km2) and is customarily divided into several principal oceans and smaller seas, with the ocean covering approximately 71% of Earth’s surface and 90% of the Earth’s biosphere. The ocean contains 97% of Earth’s water, and oceanographers have stated that less than 5% of the World Ocean has been explored. The total volume is approximately 1.35 billion cubic kilometers (320 million cu mi) with an average depth of nearly 3,700 meters (12,100 ft).
As the world ocean is the principal component of Earth’s hydrosphere, it is integral to all known life, forms part of the carbon cycle, and influences climate and weather patterns. The world ocean is the habitat of 230,000 known species, but because much of it is unexplored, the number of species that exist is much larger, possibly over two million. The origin of Earth’s oceans remains unknown; oceans are thought to have formed in the Hadean period and may have been the impetus for the emergence of life. — Wikipedia
NOAA Ocean Explorer: Ocean Exploration in the News Ocean exploration is a dynamic and exciting field. New discoveries and explorations, advances in technology, and important findings in deep-ocean science happen every day. The items on this page capture big news in ocean exploration, not just at NOAA, but around the field. Check back regularly or subscribe to our feed to stay on top of this ever-changing world that explores the deep.
The 'Curious' Robots Searching for the Ocean's...
by The Atlantic on February 23, 2017 at 12:00 am
A new class of machines knows how to recognize and investigate unexpected things that pop up underwater. […]
New generation of underwater drones makes waves...
by CBS News on November 2, 2016 at 12:00 am
Underwater drones are opening up a whole new frontier of exploration. The lightweight vehicles can zip along coral reefs, explore marine life and even go inside shipwrecks. […]