Considering that approximately 70% of the earth is covered by oceans, marine biology is evidently a vital discipline for the protection of life in the waters. Marine biology is the scientific study of ocean organisms or brackish and aquatic bodies found in water. This also includes plants and the terrestrial environment that has a direct impact on marine waters. There are several disciplines in marine biology such as biological oceanography, physical oceanography, astronomy, chemistry, zoology, embryology, taxonomy, cell biology, natural history and geology, molecular biology, morphology and meteorology. A new aspect of marine conservation has recently attracted new scientific disciplines such as biogeography, marine ecology, botany, anthropology, zoology, fisheries biology, genetics, economics and law. This article seeks to examine the main purpose of marine biology and discover how aquatic organisms are controlled by ocean phenomena. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay Marine biology deals with various aspects of life in waters. For example, how various organisms adapt to the physical and chemical properties of ocean water, ocean currents and movements, the availability of light at various ocean depths, and the solid surface of the sea floor. The sea is also a huge source of food supply, for example fish and shrimp. Weather and climate conditions are also influenced by ocean circulation, and much revenue is generated through international trade, tourism, and recreation. The dynamics of existence is also essential in the study of marine biology. For example, oxygen cycling in coral reefs, predator-prey relationships and food chains, population and distribution, overfishing, invasive and endangered species. Another area of ​​interest is the effects of pollution on the life of organisms in the oceans, particularly oil spills from shipping, inorganic waste, sewage effluents, fertilizers and pesticides leached from land-based sources, and siltation from coastal construction activities. the sea is home to various aquatic beings. These include seabirds such as penguins and auks, various types of fish, invertebrates such as jellyfish, mammals such as whales and dolphins, reptiles such as sea snakes and sea turtles, marine fungi such as algae, plants such as mangroves, sea grass and marine algae. and other microscopic organisms such as zoo and phytoplankton. These organisms survive in different habitats in the ocean. There are two main categories of marine habitats: pelagic or coastal habitat and demarsal or open ocean habitat. Pelagic habitats are those on the surface of the water while demarsal habitats are found in the depths of the sea. Marine organisms are then classified based on their habitat. i.e. pelagic organisms and demersal organisms, (Trist, 1999). Various technologies are used in marine biology to help discover the nature of survival and providence and the importance of marine life to humans, for example in providing not only food and water, but also medicine, raw material and hydraulic energy . There are special tools that marine researchers use to effectively study marine life. These include trawling, used to collect marine samples, and plankton nets to capture microorganisms in the water. These methods are mainly used for sampling. Methods are also usedtracking that include photo identification research, animal cameras and hydrophones to detect and record acoustic signals in the ocean. Sound data is effective in monitoring waves, ships, marine mammals and other ocean activity. Sonar, similar to soundings, is essential for locating larger objects in the water and measuring bathymetry (ocean depth). Sonar works by detecting echoes underwater because sound waves in water last longer than in air. Satellite tags are also used to monitor marine life. They are usually marked by sensors that determine their migratory patterns. Satellites are also useful for measuring ocean geographic data such as water color and temperature. This data helps analyze ocean characteristics such as climate, cold upwelling warm water, and currents. There is also observation equipment used under the sea, including remotely operated vehicles (ROVs), unmanned robots that transmit data to researchers where submersion is considered a health hazard. ROVs are usually equipped with sample retrieval instruments, still and video cameras, as well as other mechanical equipment needed to make measurements. Fiber optics is also an observation tool that uses LED light and low-light cameras, which do not distract deep sea life, to capture behavioral and characteristic aspects of marine creatures. Some sophisticated computer technologies are also used in the collection, processing, analysis and visualization of data captured by strategically placed sensors in the marine environment to improve the measurement of temperature, salinity, navigation, depth and meteorological data. The researchers also operate underwater. They live and work below the surface of the water for long periods. This was named Aquarius by the National Oceanic and Atmospheric Administration. (NOAA). Human impacts on the ocean are often more harmful than constructive. This occurs through pollution which causes severe and diverse changes in marine life, which subsequently results in a dangerous ecosystem. Pollution causes acidification and warming of the ocean, the expansion of dead zones in the deep ocean, and changes in water circulation. As a result, there is little abundance of sea grass, mangroves, coral reefs and fish. Aquatic food chains are also being altered as distribution takes on a new angle. More parasites and diseases are also appearing in marine life (Global Change Institute, 2010). However, what humans do not realize is the importance of marine life to the existence and survival of humans and the earth in general. In particular is the role of marine biology in land formation through erosion and displacement. This is quite relevant to the creation of the earth. According to history, the earth was initially a huge land mass called Pangea. This super continent had a ridge in the center known as the Mid-Atlantic Ridge. Hot spots in the ocean floor, holes under the ocean, released hot magma and lava from the earth's core that caused a large rift. The cooling of the magma and lava formed a solid known as earth. This is said to be a continuous process as hot spots continue to release colossal amounts of lava every year. Currently, frozen solids formed on ocean surfaces are called islands. This shows how influential the ocean can be in the entire ecosystem. Air quality on earth is also influenced by coral reefs, which are said to produce around 82% of the world's oxygen.