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Jesse Ventura

Selected panorama

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Introduction

Surface view of the Atlantic Ocean

The ocean is the body of salt water that covers approximately 70.8% of Earth. The ocean is conventionally divided into large bodies of water, which are also referred to as oceans (the Pacific, Atlantic, Indian, Antarctic/Southern, and Arctic Ocean), and are themselves mostly divided into seas, gulfs and subsequent bodies of water. The ocean contains 97% of Earth's water and is the primary component of Earth's hydrosphere, acting as a huge reservoir of heat for Earth's energy budget, as well as for its carbon cycle and water cycle, forming the basis for climate and weather patterns worldwide. The ocean is essential to life on Earth, harbouring most of Earth's animals and protist life, originating photosynthesis and therefore Earth's atmospheric oxygen, still supplying half of it. (Full article...)

Waves in Pacifica, California

A sea is a large body of salt water. There are particular seas and the sea. The sea commonly refers to the ocean, the interconnected body of seawaters that spans most of Earth. Particular seas are either marginal seas, second-order sections of the oceanic sea (e.g. the Mediterranean Sea), or certain large, nearly landlocked bodies of water. (Full article...)

Oceanography (from Ancient Greek ὠκεανός (ōkeanós) 'ocean' and γραφή (graphḗ) 'writing'), also known as oceanology, sea science, ocean science, and marine science, is the scientific study of the ocean, including its physics, chemistry, biology, and geology. (Full article...)

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Deep-water coral Paragorgia arborea and a Coryphaenoides fish at a depth of 1,255 m (4,117 ft) on the Davidson Seamount

The habitat of deep-water corals, also known as cold-water corals, extends to deeper, darker parts of the oceans than tropical corals, ranging from near the surface to the abyss, beyond 2,000 metres (6,600 ft) where water temperatures may be as cold as 4 °C (39 °F). Deep-water corals belong to the Phylum Cnidaria and are most often stony corals, but also include black and thorny corals and soft corals including the Gorgonians (sea fans). Like tropical corals, they provide habitat to other species, but deep-water corals do not require zooxanthellae to survive.

While there are nearly as many species of deep-water corals as shallow-water species, only a few deep-water species develop traditional reefs. Instead, they form aggregations called patches, banks, bioherms, massifs, thickets or groves. These aggregations are often referred to as "reefs," but differ structurally and functionally. Deep sea reefs are sometimes referred to as "mounds," which more accurately describes the large calcium carbonate skeleton that is left behind as a reef grows and corals below die off, rather than the living habitat and refuge that deep sea corals provide for fish and invertebrates. Mounds may or may not contain living deep sea reefs. (Full article...)

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Interesting facts - show different entries

Julie Packard
Julie Packard
  • Female seaweed blennies deposit their eggs in a shared nest where the male fish guards them until they hatch.

Selected list articles and Marine habitat topics

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The following are images from various ocean-related articles on Wikipedia.

In the news

5 June 2025 – Mediterranean Sea migrant smuggling, Sudanese refugee crisis
The Freedom Flotilla, a flotilla carrying humanitarian aid en route to Gaza with Swedish activist Greta Thunberg, Irish actor Liam Cunningham, and French European Parliament member Rima Hassan, rescue four Sudanese civil war refugees from a dinghy near Libya. (The Times of Israel) (The Print)
28 May 2025 – Red Sea crisis
Israel says it launched airstrikes against targets in Houthi-controlled Yemen, destroying the last operational plane of Yemenia Airlines at Sanaa International Airport. (Reuters)
16 May 2025 – Red Sea crisis
The Israeli Air Force launches airstrikes on the ports of Hudaydah and Salif in Houthi-controlled Yemen, as prime minister Benjamin Netanyahu and defense minister Israel Katz warn that if the Houthis persist in attacking Israel, their leader Abdul-Malik al-Houthi will be directly targeted. (Al Arabiya)
11 May 2025 – Mediterranean Sea migrant smuggling
Three people are found dead, including two children, on a dinghy crossing the Mediterranean Sea from Libya to Italy. German NGO RESQSHIP intercepts the boat and brings the remaining 59 survivors to Lampedusa. (DW)
10 May 2025 – Soviet space program
Kosmos 482, a failed Venus probe launched by the Soviet Union in 1972, re-enters Earth's atmosphere, splashing down in the Indian Ocean west of Indonesia, according to Roscosmos. (The Guardian) (CNN)

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Admiralty law

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Do you have a question about oceans, seas or oceanography that you can't find the answer to? Consider asking it at the Wikipedia reference desk.

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