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Open water swimming. The start of an amateur ocean swim event on Christmas morning 2016, at Manly Beach, Australia. Open water swimming is a swimming discipline which takes place in outdoor bodies of water such as open oceans, lakes, and rivers. Competitive open water swimming is governed by the International Swimming Federation, World Aquatics ...
Nekton or necton (from the Greek: νηκτόν, translit. nekton, lit. "to swim") refers to aquatic organisms that can actively and persistently propel themselves (i.e. swim) through a water column. The term was proposed by German biologist Ernst Haeckel to differentiate between the active swimmers in a body of water, and the planktons that ...
Wear a bright swimsuit. This advice is commonly given for children's swimsuits, but adults can also benefit from wearing bright colors (think neon yellow or red) that make it easier to spot if ...
Swimming is the self- propulsion of a person through water, or other liquid, usually for recreation, sport, exercise, or survival. Locomotion is achieved through coordinated movement of the limbs and the body to achieve hydrodynamic thrust that results in directional motion. Humans can hold their breath underwater and undertake rudimentary ...
Anchialine system. An anchialine system ( / ˈæŋkiəlaɪn /, from Greek ankhialos, "near the sea") is a landlocked body of water with a subterranean connection to the ocean. Depending on its formation, these systems can exist in one of two primary forms: pools or caves. The primary differentiating characteristics between pools and caves is ...
Items like swim vests might offer some level of protection, but they are not life jackets. Puddle jumpers are certified by the U.S. Coast Guard, but, again, are not considered life jackets.
Oceanic physical-biological process. Due to the higher density of sea water (1,030 kg m −3) than air (1.2 kg m −3 ), the force exerted by the same velocity on an organism is 827 times stronger in the ocean. When waves crash on the shore, the force exerted on littoral organisms can be equivalent to several tons.
Oceans seven. The Oceans Seven is a marathon swimming challenge consisting of seven open water channel swims. It was devised in 2008 as the swimming equivalent of the Seven Summits mountaineering challenge. It comprises the North Channel, the Cook Strait, the Molokaʻi Channel, the English Channel, the Catalina Channel, the Tsugaru Strait and ...