Marine biology is the scientific study of the marine ecosystem, including different types of oceans, tidal zones, saltwater swamps, mangroves, rivers and streams. along their features, depth of the ocean beds, and different types of marine life, which mainly involves a vast number of species, from the microscopic phytoplankton and zooplankton to massive organisms like aquatic plants, different types of fish, whales, and sharks that lives, survives, and exists, under the surface of the ocean. Overall, Marine biology also includes the study of the inter-relationship between marine life, ecology, and the environment.
The study of Marine biology shows a wide variety of adaptations which involves the physiological, structural and behavioural adaptations and life cycle of marine habitats. According to the taxonomy records, marine habitats are older than terrestrial habitats, as life originated in the oceans about 3.1 billion to 3.4 billion years ago.
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