sea

The sea, connected as the world ocean or simply the ocean, is the body of salty water that covers approximately 71 percent of the Earth's surface. The word sea is also used to denote second-order sections of the sea, such as the Mediterranean Sea, as well as certain large, entirely landlocked, saltwater lakes, such as the Caspian Sea. The sea moderates Earth's climate and has important roles in the water cycle, carbon cycle, and nitrogen cycle. Humans harnessing and studying the sea have been recorded since ancient times, and evidenced well into prehistory, while its modern scientific study is called oceanography. The most abundant solid dissolved in seawater is sodium chloride. The water also contains salts of magnesium, calcium, potassium, and mercury, amongst many other elements, some in minute concentrations. Salinity varies widely, being lower near the surface and the mouths of large rivers and higher in the depths of the ocean; however, the relative proportions of dissolved salts vary little across the oceans.
Winds blowing over the surface of the sea produce waves, which break when they enter the shallow water. Winds also create surface currents through friction, setting up slow but stable circulations of water throughout the oceans. The directions of the circulation are governed by several factors, including the shapes of the continents and Earth's rotation (through the Coriolis effect). Deep-sea currents, known as the global conveyor belt, carry cold water from near the poles to every ocean. Tides, the generally twice-daily rise and fall of sea levels, are caused by Earth's rotation and the gravitational effects of the Moon and, to a lesser extent, of the Sun. Tides may have a very high range in bays or estuaries. Submarine earthquakes arising from tectonic plate movements under the oceans can lead to destructive tsunamis, as can volcanoes, huge landslides, or the impact of large meteorites.
A wide variety of organisms, including bacteria, protists, algae, plants, fungi, and animals, lives in the sea, which offers a wide range of marine habitats and ecosystems, ranging vertically from the sunlit surface and shoreline to the great depths and pressures of the cold, dark abyssal zone, and in latitude from the cold waters under polar ice caps to the warm waters of coral reefs in tropical regions. Many of the major groups of organisms evolved in the sea and life may have started there.
The sea provides substantial supplies of food for humans, mainly fish, but also shellfish, mammals and seaweed, whether caught by fishermen or farmed underwater. Other human uses of the sea include trade, travel, mineral extraction, power generation, warfare, and leisure activities such as swimming, sailing, and scuba diving. Many of these activities create marine pollution. The sea has been an integral element for humans throughout history and culture.

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  1. R

    Looking For Buying Night Crows Dummy Account SEA 205 ROOK

    Looking ako dummy account SEA 205 ROOK any levels po. Gmail must be dummy rin. Thanks baka meron kayo!
  2. A

    Philippines: German FM alarmed by South China Sea tensions

    What did Baerbock say? "I have just come from the Middle East, where the situation continues to be extremely dangerous, and the risk that one more spark could set the whole region ablaze still exists," she said in a press briefing after meeting her counterpart, Philippine Foreign Secretary...
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    Cheat Free Gummy's Sea Of Thieves External Esp v3.6.2 Cheat

    File Name: Gummy's Sea Of Thieves External Esp v3.6.2 Cheat File Size: 5 MB Virus Scan Link: Click Here To View Via VirusTotal Download Link: Hidden content Hidden content HOW TO USE CHEAT INSTRUCTIONS 1. Open Farlight 2. Run SotExternalESPv3.6.2.exe 3. Enjoy --------------...
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    PlayToEarn OPEN SEA NFT COLLECTION NEW INVESTMENT PLATFORM PANGLONGTERM W/ wíhdráwAL PROOF

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    Seaman VS Engineer

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    Closed BANNED M3U, GO TO VISIONVIBESTV.

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    Garena SEA to RIOT migration

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    For Sale Sales >> Streetballers Playpark SEA Account

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    [Direct Link] [EPUB] The Art of Thinking Clearly | Rolf Dobelli (2013)

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    Solas-safety of life at sea

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  11. J

    Solusyon sa west Philippine sea ano na?

    ano sa palagay nyo may solusyon ba o wala na magagawa ang pilipinas sa pambubully ng china
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    Sea Battle 2 v3.0.3 MOD

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    [Direct Link] [EPUB] Sea of Strangers | Lang Leav (2018)

    Sea of Strangers (2018) Sea of Strangers by Lang Leav picks up from her previous international bestselling books including Love & Misadventure, Lullabies, and The Universe of Us, and sets sail for a grand new adventure. This completely original collection of poetry and prose will not only...
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  15. D

    Philippines, Taiwan, Malaysia reject China's latest South China Sea map

    The Philippines, Malaysia, Taiwan and Vietnam have rejected as baseless a map released by China that denotes its claims to sovereignty including in the South China Sea and which Beijing said on Thursday should be viewed rationally and objectively. China released the map on Monday of its famous...
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    [THE DEEP SEA] Scroll the ocean depth. You won't regret it.

    Enjoy scrolling, nakakarelax siya promise. Hidden content
  18. B

    Sea man hahaha

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    Trivia Sea lions can dance to a beat

    Sea lions can dance to a beat There are only two mammals on Earth with the proven ability to move their bodies in time with an external beat: humans (though not all humans, to be fair) and sea lions. When researchers at the University of Santa Cruz rescued a stranded sea lion in 2013, they...
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    A sea lion once saved a man A man named jumped off San Francisco's Golden Gate Bridge but survived despite breaking his back. While it seemed he would not be long for this world, a sea lion came to the rescue, swimming beneath him and keeping him afloat until the coast guard arrived. (S)...
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    Trivia Parrots of the Sea

    DID YOU KNOW? 💭 Puffins are the Parrots of the Sea puffin, also called bottlenose, or sea parrot, any of three species of diving birds that belong to the auk family, Alcidae (order Charadriiformes). They are distinguished by their large, brightly coloured, triangular beaks. Puffins nest in...
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    38th PH GOLD and 3 Sea Games Record Broken!

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  26. K

    Looking for suggestions

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    The Division Resurgence SEA

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  28. R

    Sea shanty

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    Maganda parin bang maglaro ng Dragon Nest SEA sa 2023?

    Any advice or suggestions po if maganda parin bang maglaro ng Dragon Nest SEA sa 2023? If not, ano po pede nyo pong mairecommend na online pc games like ran/ dragon nest
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    Help NA to SEA server on DOTA

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