The Oceans Portal
A portal dedicated to oceans, seas, oceanography and related topics

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Surface view of the Atlantic Ocean

The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the world ocean is conventionally divided. Separate names are used to identify five different areas of the ocean: Pacific (the largest), Atlantic, Indian, Southern (Antarctic), and Arctic (the smallest). Seawater covers approximately 361,000,000 km2 (139,000,000 sq mi) of the planet. The ocean is the principal component of Earth's hydrosphere, and therefore integral to life on Earth. Acting as a huge heat reservoir, the ocean influences climate and weather patterns, the carbon cycle, and the water cycle. (Full article...)

Waves in Pacifica, California

The sea, connected as the world ocean or simply the ocean, is the body of salty water that covers approximately 71% 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, carbon, and nitrogen cycles. 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. (Full article...)

Oceanography (from Ancient Greek ὠκεανός (ōkeanós) 'ocean', and γραφή (graphḗ) 'writing'), also known as oceanology and ocean science, is the scientific study of the oceans. It is an important Earth science, which covers a wide range of topics, including ecosystem dynamics; ocean currents, waves, and geophysical fluid dynamics; plate tectonics and the geology of the sea floor; and fluxes of various chemical substances and physical properties within the ocean and across its boundaries. These diverse topics reflect multiple disciplines that oceanographers utilize to glean further knowledge of the world ocean, including astronomy, biology, chemistry, climatology, geography, geology, hydrology, meteorology and physics. Paleoceanography studies the history of the oceans in the geologic past. An oceanographer is a person who studies many matters concerned with oceans, including marine geology, physics, chemistry and biology. (Full article...)

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Amerikanisches Mittelmeer NASA World Wind Globe.jpg
Satellite image of the Caribbean Sea

The Caribbean Sea (Spanish: Mar Caribe; French: Mer des Caraïbes; Haitian Creole: Lanmè Karayib; Jamaican Patois: Kiaribiyan Sii; Dutch: Caraïbische Zee; Papiamento: Laman Karibe) is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico and Central America to the west and southwest, to the north by the Greater Antilles starting with Cuba, to the east by the Lesser Antilles, and to the south by the northern coast of South America. The Gulf of Mexico lies to the northwest.

The entire area of the Caribbean Sea, the numerous islands of the West Indies, and adjacent coasts are collectively known as the Caribbean. The Caribbean Sea is one of the largest seas and has an area of about 2,754,000 km2 (1,063,000 sq mi). The sea's deepest point is the Cayman Trough, between the Cayman Islands and Jamaica, at 7,686 m (25,217 ft) below sea level. The Caribbean coastline has many gulfs and bays: the Gulf of Gonâve, Gulf of Venezuela, Gulf of Darién, Golfo de los Mosquitos, Gulf of Paria and Gulf of Honduras. (Full article...)
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In the news

23 November 2022 – Russo-Ukrainian War
British Defence Secretary Ben Wallace announces that the United Kingdom will send three Sea King helicopters to the Ukrainian Air Force as part of a new £50 million support package to Ukraine. (The Telegraph)
2 November 2022 – 2021–2022 North Korean missile tests
North Korea fires 23 ballistic missiles into the Sea of Japan and Yellow Sea, one of which crossed the Northern Limit Line (NLL), the de facto maritime boundary between North and South Korea, for the first time. Air raid sirens were activated on the South Korean island of Ulleungdo and South Korean fighter jets fired three air-to-surface missiles across the NLL in response to the missile launches. (Yonhap News Agency) (Yonhap News Agency 2) (Reuters)
2 November 2022 – Economic impact of the 2022 Russian invasion of Ukraine
Russia rejoins the Black Sea Grain Initiative following Turkish mediation efforts. Ukraine has reportedly provided written guarantees that they will use the grain corridor in the Black Sea "solely for civilian and humanitarian purposes". (Middle East Eye)
29 October 2022 – Russo-Ukrainian War
Russia accuses Ukraine of a drone attack on its Black Sea Fleet headquarters in Sevastopol, Crimea. The Russian-installed Governor of Sevastopol Mikhail Razvozhayev says the Russian Navy repelled the attack, which he calls the "most massive" since the invasion began. Russia consequently suspends its participation in the Black Sea Grain Initiative. (NPR) (BBC News)
Russia accuses the United Kingdom's Royal Navy of blowing up the Nord Stream 1 and Nord Stream 2 gas pipelines in the Baltic Sea on September 26. The Russian Defence Ministry says the Navy was also behind recent attacks on Russian Navy facilities in Crimea. The British government denies both accusations. (Reuters)



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