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List of water sports. A variety of water sports; from top left: diving, surfing, water polo, synchronized swimming, swimming, rowing, yacht racing, dragon boat racing, kayaking. Water sports or aquatic sports are sports activities conducted on waterbodies and can be categorized according to the degree of immersion by the participants.
Marine ecosystems are the largest of Earth 's aquatic ecosystems and exist in waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content. Marine waters cover more than 70% of the surface of the Earth and account for more than 97% of Earth's water supply [1][2] and 90% of habitable ...
Pond. A man made pond at sunset in Montgomery County, Ohio. Stereoscopic image of a pond in Central City Park, Macon, GA, c. 1877. A pond is a small, still, land-based body of water formed by pooling inside a depression, either naturally or artificially. A pond is smaller than a lake [1] and there are no official criteria distinguishing the two ...
Fishing techniques are methods for catching fish. The term may also be applied to methods for catching other aquatic animals such as molluscs (shellfish, squid, octopus) and edible marine invertebrates. Fishing techniques include hand-gathering, spearfishing, netting, angling and trapping.
An aquatic ecosystem is an ecosystem found in and around a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms — aquatic life —that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. [1]
Fish farming. A fish farm on the coast of Euboea island, in South Euboean Gulf, Greece. Fish farming or pisciculture involves commercial breeding of fish, most often for food, in fish tanks or artificial enclosures such as fish ponds. It is a particular type of aquaculture, which is the controlled cultivation and harvesting of aquatic animals ...
A marine habitat is a habitat that supports marine life. Marine life depends in some way on the saltwater that is in the sea (the term marine comes from the Latin mare, meaning sea or ocean). A habitat is an ecological or environmental area inhabited by one or more living species. [ 1 ] The marine environment supports many kinds of these habitats.
Hypoxia in fish. Fish are exposed to large oxygen fluctuations in their aquatic environment since the inherent properties of water can result in marked spatial and temporal differences in the concentration of oxygen (see oxygenation and underwater ). Fish respond to hypoxia with varied behavioral, physiological, and cellular responses to ...