A sea is a large body of salt water that is surrounded in whole or in part by land. More broadly, "the sea" is the interconnected system of Earth's salty, oceanic waters—considered as one global ocean or as several principal oceanic divisions. The sea moderates Earth's climate and has important roles in the water cycle, carbon cycle, and nitrogen cycle. Although the sea has been traveled and explored since prehistory, the modern scientific study of the sea—oceanography—dates broadly to the British Challenger expedition of the 1870s. The sea is conventionally divided into up to five large oceanic sections—including the International Hydrographic Organization's four named oceans (the Atlantic, Pacific, Indian, and Arctic) and the Southern Ocean; smaller, second-order sections, such as the Mediterranean, are known as seas. Owing to the present state of continental drift, the Northern Hemisphere is now fairly equally divided between land and sea (a ratio of about 2:3) but the South is overwhelmingly oceanic (1:4.7). Salinity in the open ocean is generally in a narrow band around 3.5% by mass, although this can vary in more landlocked waters, near the mouths of large rivers, or at great depths. About 85% of the solids in the open sea are sodium chloride. Deep-sea currents are produced by differences in salinity and temperature. Surface currents are formed by the friction of waves produced by the wind and by tides, the changes in local sea level produced by the gravity of the Moon and Sun.
sea ​​puzzle - Bałtyk near the village of Wicie
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sea ​​puzzle

Added year ago by Ryś

373 1

Azure Window - no longer existing rock bridge off the coast of the island of Gozo in the Republic of Malta
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Azure Window

Added year ago by Z&S

377

venice gondolas - Venice - a city and municipality in the north of Italy on the Adriatic, the capital of the Veneto re
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venice gondolas

Added year ago by aaaaaaaaaa

265

Lighthouse - Arrange a picture showing a lantern.
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Lighthouse

Added year ago by Lilith

508 3

Bambini al mare - Bambini che corrono al mare
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Bambini al mare

Added year ago by Marty

42

Metamorphosis - Cody Griffin has everything in life - a loving family, excellent swimming results and the interest o
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Metamorphosis

Added year ago by fusia2

11

Mako Mermaids: Syreny z Mako - Akcja serialu, podobnie jak w H2O – wystarczy kropla, rozgrywa się w mieście Gold Coast w Austra
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Mako Mermaids: Syreny z Mako

Added over a year ago by fusia2

140

Mako Mermaids: Syreny z Mako - Akcja serialu, podobnie jak w H2O – wystarczy kropla, rozgrywa się w mieście Gold Coast w Austra
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Mako Mermaids: Syreny z Mako

Added over a year ago by fusia2

131

Violetta Castillo - - miła dziewczyna, pełna życia, ale osamotniona i osłonięta przez ojca. Ma wspaniały głos, od
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Violetta Castillo

Added over a year ago by fusia2

24

RUGGELARIA - RUGGELARIA - połączenie dwóch imion: Ruggero i Candelaria. Rugg gra 
w serialu ,,Violetta'&
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RUGGELARIA

Added over a year ago by Kamcia2

19

Facundo Gambandé - Facundo Gambandé (ur. 10 stycznia 1990 w Cordoba, Argentyna ) 1 jest aktorem , piosenkarzem i tance
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Facundo Gambandé

Added over a year ago by fusia2

23

zamek w nidzicy - zamek w nidzicy nad zalewem
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zamek w nidzicy

Added over a year ago by górymojepieniny

409

zamek w nidzicy - zamek w nidzicy nad zalewem
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zamek w nidzicy

Added over a year ago by górymojepieniny

313

piękne miejsca na ziemi - piękne miejsca na ziemi
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piękne miejsca na ziemi

Added over a year ago by Nikola

306

Moje wakacje - Spróbuj ułożyć obrazek z plażą
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Moje wakacje

Added over a year ago by Agnieszka

335

plaża w NZ - puzle na warszat do Krzyżewa
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plaża w NZ

Added over a year ago by dzwonek

290

piękne miejsca na ziemi - piękne miejsca na ziemi
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piękne miejsca na ziemi

Added over a year ago by Nikola

737

tory w srodku pola - Piékny klimatyczny widok :)
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tory w srodku pola

Added over a year ago by Cezary

876

czarek  na wakacjach - Wypad nad morze z rodzicami :)
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czarek na wakacjach

Added over a year ago by Cezary

58

H2o Wystarczy Kropla - H2o Wystarczy Kropla: Cleo Sertori i Charlotte Watsford
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H2o Wystarczy Kropla

Added over a year ago by Natalia ;P

20

H2o Wystarczy Kropla - H2o Wystarczy Kropla: Cleo Sertori, Rikki Chadwick i Emma Gilbert
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H2o Wystarczy Kropla

Added over a year ago by Natalia ;P

38

H2o Wystarczy Kropla - H2o Wystarczy Kropla: Cleo Sertori, Rikki Chadwick i Emma Gilbert
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H2o Wystarczy Kropla

Added over a year ago by Natalia ;P

23