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  2. Oceanic zone - Wikipedia

    en.wikipedia.org/wiki/Oceanic_zone

    The oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf (e.g. the neritic zone), but operationally is often referred to as beginning where the water depths drop to below 200 metres (660 ft), seaward from the coast into the open ocean with its pelagic zone.

  3. Borders of the oceans - Wikipedia

    en.wikipedia.org/wiki/Borders_of_the_oceans

    The borders of the oceans are the limits of Earth's oceanic waters.The definition and number of oceans can vary depending on the adopted criteria. The principal divisions (in descending order of area) of the five oceans are the Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern (Antarctic) Ocean, and Arctic Ocean.

  4. Mesopelagic zone - Wikipedia

    en.wikipedia.org/wiki/Mesopelagic_zone

    The mesopelagic zone has some unique acoustic features. The Sound Fixing and Ranging (SOFAR) channel, where sound travels the slowest due to salinity and temperature variations, is located at the base of the mesopelagic zone at about 600–1,200m. [6] It is a wave-guided zone where sound waves refract within the layer and propagate long ...

  5. Ocean - Wikipedia

    en.wikipedia.org/wiki/Ocean

    The ocean zones can be grouped by light penetration into (from top to bottom): the photic zone, the mesopelagic zone and the aphotic deep ocean zone: The photic zone is defined to be "the depth at which light intensity is only 1% of the surface value". [12]: 36 This is usually up to a depth of approximately 200 m in the open ocean.

  6. Hadal zone - Wikipedia

    en.wikipedia.org/wiki/Hadal_zone

    The hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches.The hadal zone ranges from around 6 to 11 km (3.7 to 6.8 mi; 20,000 to 36,000 ft) below sea level, and exists in long, narrow, topographic V-shaped depressions.

  7. Portal:Oceans - Wikipedia

    en.wikipedia.org/wiki/Portal:Oceans

    The ocean contains 97% of Earth's water and is the primary component of Earth's hydrosphere and is thereby essential to life on Earth. The ocean influences climate and weather patterns, the carbon cycle, and the water cycle by acting as a huge heat reservoir. (Full article...) Waves in Pacifica, California. A sea is a large body of salt water.

  8. Ocean zoning - Wikipedia

    en.wikipedia.org/wiki/Ocean_zoning

    This, often big picture, approach to ocean management allocates areas for various ocean uses. Types of zones can include areas designated for marine protected areas (including marine reserves), aquaculture, various types of fishing, shipping, recreation (including scuba diving), mooring/anchoring, and energy production (including offshore wind ...

  9. Abyssal plain - Wikipedia

    en.wikipedia.org/wiki/Abyssal_plain

    Pelagic zones. The ocean can be conceptualized as zones, depending on depth, and presence or absence of sunlight.Nearly all life forms in the ocean depend on the photosynthetic activities of phytoplankton and other marine plants to convert carbon dioxide into organic carbon, which is the basic building block of organic matter.